Question

Hi, I'm confused how to solve: 3x^2-2x-(x^2-5x), thanks!

Answer 1

=3x^2-2x-x^2+5x
=2x^2+3x
btw, why? this is easy

Answer 2

=3x^2-2x-x^2+5x
=2x^2+3x
btw, why? this is easy

Answer 3

I already have the answer, its a practice quiz, but unfortunately that doesn't help me understand how to do it even though its easy

Answer 4

you have a minus sign outside the bracket, that means (-1) times everything in bracket, so
-(x^2-5x) = -1 * (-x^2-5x) = (-1)*(x^2)+(-1)*(-5x)=-x^2+5x
so ur equation becomes 3x^2-2x-x^2+5x=2x^2+3x
hope that help?

Answer 5

sorry, no minus before x^2 in the bracket in the second one from the left :)

Answer 6

Thanks!

Answer 7

Thanks!