Question

Let f(x) = 2x2 − 9x and g(x) = -5x2 + 4x. Find f(x) − g(x).

Answer 1

That would be this: \[2x ^{2}-9x-(-5x ^{2}+4x)\]The negative outside the parenthesis changes the signs inside the parenthesis. \[2x ^{2}-9x+5x ^{2}-4x=7x ^{2}-13x\]

Answer 2

thank you @IMStuck . ur a lifesaver

Answer 3

You're so very welcome!