It depends if there are parentheses or not... for example
if the problem looks like this: (-b)^2, then do (-b)x(-b) and get b^2
OR
if the problem looks like this: -b^2, then do -(b)(b) which would be -b^2
As u can see, the parentheses' placement make a large difference in the final answer.
No, unless "a" happens to be equal to 0, or to 1.
All the time
hello
(b-4) squared
B squared equals c squared minus a squared then to find B take the square root of you answer for b squared
(b-c)(a+b)-ac
No. If you expand (a + b)2 you get a2 + 2ab + b2. This is not equal to a2 + b2
It is: (B -10)(B +10) when factored
Oh, dude, that's just the difference of squares formula! It's like A squared minus B squared equals (A + B)(A - B). So, yeah, you just gotta remember that little math nugget next time you're trying to impress someone at a party or something.
To evaluate it you need to know both b and a. But it is possible to factorise it as follows: b2-a2 = (b-a)*(b+a)
It simplifies to 5a+4 !
(a - 2b)(2a - b)