Bitcoin Forum

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

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 ...

:)

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

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).

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.

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.

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

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.

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

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

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

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

In a High School we were doing Matrix...

http://www.barnorama.com/wp-content/uploads/2013/02/asians.jpg

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.

Hello :D

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

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

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

Damn. you shouldn't be a math genius to do this simple exercise

Mate, that's true , but aren't all people good at maths nor are all god in drawing...

Yeah, but this is a basics. It's like aren't all people good in drawing, but everybody could draw a circle, square or a line

HAHAHAH, very well said :P

Well you can't expect a baby to draw a circle or a line.

I'm a baby in this community, I'm only 14.

If you need to draw a line, you should make 2 points and connect them. It's easy. Even if you are 14 years old. Trust me.

This must be a joke or do you really want to imply that 14 year old can't draw a line.Even 7 year old can do this stuff.

I think that people need to calm down. The OP asked a question and it has since been answered, no need for arguments!  ::)

-.- I was stating that a baby can not draw a circle or a line.

I was implying that you can't expect a grade 9 to instantly know algebra without being taught it.