I need a maths genius

[CrackedLogic]

What do I do first here,

-2(2x-3)^2

Do I distribute or do I square the bracket first.

 

[Cryptopher]

What do I do first here,

-2(2x-3)^2

Do I distribute or do I square the bracket first.

 

Too early on a Sunday morning for this, so I placed it into Wolfram Alpha.

Check here for the results: http://www.wolframalpha.com/input/?i=-2%282x-3%29%5E2

Look at the step-by-step solution under the expanded form section.

Hope that helps!

[CrackedLogic]

What do I do first here,

-2(2x-3)^2

Do I distribute or do I square the bracket first.

 

Too early on a Sunday morning for this, so I placed it into Wolfram Alpha.

Check here for the results: http://www.wolframalpha.com/input/?i=-2%282x-3%29%5E2

Look at the step-by-step solution under the expanded form section.

Hope that helps!

this helped a lot, thanks

[roslinpl]

What do I do first here,

-2(2x-3)^2

Do I distribute or do I square the bracket first.

 

Well -- .... this is something BASIC for anyone who is doing math ...

1st - brackets "  (  ) "
2nd - of roots and exponentiation
3rd - * and / 
4rd -  + and - ...

So... in this case
1st :  2x-3
2nd : (2x-3)^2
3rd : -2 * (2x-3)^2 ...

[spazzdla]

This requires no genius..

Bedmas..


1s) Brackets

2d) Exponents

3rd order doesn't matter( Division/Multiplication

4th, order doesn't matter) addition/Subtraction.

2(2x-3)^2

2(4*x*x-9)

8x*x-18

[bluefirecorp]

This requires no genius..

Bedmas..


1s) Brackets

2d) Exponents

3rd order doesn't matter( Division/Multiplication

4th, order doesn't matter) addition/Subtraction.

3rd and 4th are from left to right.

[spazzdla]

This requires no genius..

Bedmas..


1s) Brackets

2d) Exponents

3rd order doesn't matter( Division/Multiplication

4th, order doesn't matter) addition/Subtraction.

3rd and 4th are from left to right.

I thought it didn't matter, *shrugs*

[bluefirecorp]

This requires no genius..

Bedmas..


1s) Brackets

2d) Exponents

3rd order doesn't matter( Division/Multiplication

4th, order doesn't matter) addition/Subtraction.

3rd and 4th are from left to right.

I thought it didn't matter, *shrugs*

18 * 3 / 3 * 2 = 36 ; going left to right.

18 * 3 / 3 * 2 = 9 ; (18 * 3) then dividing it by the (3 * 2).

[ahmedjadoon]

I believe the answer is -72.You multiply the numbers in bracket first and you get -6.Taking its square would cancel minus and we get -6 x -6= 36.Multiply it with -2 and you have answer.

[bluefirecorp]

I believe the answer is -72.You multiply the numbers in bracket first and you get -6.Taking its square would cancel minus and we get -6 x -6= 36.Multiply it with -2 and you have answer.

Yeah, you're totally wrong; the x is a variable, not a multiplication sign.

[roslinpl]

I believe the answer is -72.You multiply the numbers in bracket first and you get -6.Taking its square would cancel minus and we get -6 x -6= 36.Multiply it with -2 and you have answer.

Please ... :-)  this is starting to be a joke or something ...

Misunderstanding a variable and multiply is a mistake which you should not made ...

Remember that math is a language of a nature and you should know basics.

[ahmedjadoon]

I believe the answer is -72.You multiply the numbers in bracket first and you get -6.Taking its square would cancel minus and we get -6 x -6= 36.Multiply it with -2 and you have answer.

Yeah, you're totally wrong; the x is a variable, not a multiplication sign.

If that is then I remember a simple formula we use all the times in our high school maths. (a - b)^2 = a^2 + b^2 - 2(a)(b).
Apply the forumula on bracket and then simply multiply by -2.
I solved it on paper and the answer is -8x^2 -24x - 18

[ahmedjadoon]

I believe the answer is -72.You multiply the numbers in bracket first and you get -6.Taking its square would cancel minus and we get -6 x -6= 36.Multiply it with -2 and you have answer.

Yeah, you're totally wrong; the x is a variable, not a multiplication sign.

Mistake.  

I believe the answer is -72.You multiply the numbers in bracket first and you get -6.Taking its square would cancel minus and we get -6 x -6= 36.Multiply it with -2 and you have answer.

Please ... :-)  this is starting to be a joke or something ...

Misunderstanding a variable and multiply is a mistake which you should not made ...

Remember that math is a language of a nature and you should know basics.

Yeah my post really looks like joke but it was mistake.I took variable for multiply sign but multiplication was all right. If you had known basics you would have given answer.

[CrackedLogic]

this is something BASIC for anyone who is doing math ...

Believe it or not I am still in High School, Not so basic for somebody like me (I hate math but I get My A's)

[bluefirecorp]

I believe the answer is -72.You multiply the numbers in bracket first and you get -6.Taking its square would cancel minus and we get -6 x -6= 36.Multiply it with -2 and you have answer.

Yeah, you're totally wrong; the x is a variable, not a multiplication sign.

If that is then I remember a simple formula we use all the times in our high school maths. (a - b)^2 = a^2 + b^2 - 2(a)(b).
Apply the forumula on bracket and then simply multiply by -2.
I solved it on paper and the answer is -8x^2 -24x - 18

Wrong again. The correct answer is -8x^2+24x - 18 .

[ahmedjadoon]

I believe the answer is -72.You multiply the numbers in bracket first and you get -6.Taking its square would cancel minus and we get -6 x -6= 36.Multiply it with -2 and you have answer.

Yeah, you're totally wrong; the x is a variable, not a multiplication sign.

If that is then I remember a simple formula we use all the times in our high school maths. (a - b)^2 = a^2 + b^2 - 2(a)(b).
Apply the forumula on bracket and then simply multiply by -2.
I solved it on paper and the answer is -8x^2 -24x - 18

Wrong again. The correct answer is -8x^2+24x - 18 .

YOU ARE WRONG!
Try highlighted part of foruma again carefully (a - b)^2 = a^2 + b^2 - 2(a)(b) Its

-2(2x)(-3) = 12x then becomes -24x on multiplying with -2. I guess you don't know -1*-1=+1.
You need to improve on that.

[bluefirecorp]

I believe the answer is -72.You multiply the numbers in bracket first and you get -6.Taking its square would cancel minus and we get -6 x -6= 36.Multiply it with -2 and you have answer.

Yeah, you're totally wrong; the x is a variable, not a multiplication sign.

If that is then I remember a simple formula we use all the times in our high school maths. (a - b)^2 = a^2 + b^2 - 2(a)(b).
Apply the forumula on bracket and then simply multiply by -2.
I solved it on paper and the answer is -8x^2 -24x - 18

Wrong again. The correct answer is -8x^2+24x - 18 .

YOU ARE WRONG!
Try highlighted part of foruma again carefully (a - b)^2 = a^2 + b^2 - 2(a)(b) Its

-2(2x)(-3) = 12x then becomes -24x on multiplying with -2. I guess you know -1*1-=+1.
You need to improve on that.

You know what? I'm not even going to freaking bother with you. 
You've been wrong twice now, and you just made it a third time. 
I'll allow another person to correct you. 

[roslinpl]

this is something BASIC for anyone who is doing math ...

Believe it or not I am still in High School, Not so basic for somebody like me (I hate math but I get My A's)

well I remember that I had it on a math lessons during PRIMARY school

In a High School we were doing Matrix...

[ahmedjadoon]

You know what? I'm not even going to freaking bother with you.  
You've been wrong twice now, and you just made it a third time.  
I'll allow another person to correct you.  

Figured it out.This means I was taking -b as b. I'm sorry for this foolishness.I'm definitely going to opt for Biology in College.

[majmunegoanjaj1]

Hello

Hope this helps ,  I solved it in two ways for you

If you have any more questions , you are free to ask

https://i.imgur.com/S6lSkz0.png