Question

if a =3x^2+5-6 and b=-2x^2-6x+7 then a -b equals

Answer 1

Answer:

a-b = 5x² + 6x -8

Step-by-step explanation:

a = 3x² + 5 -6 ⇒ 3x² -1

b = -2x² -6x + 7

a-b

3x² -1 -( -2x² - 6x + 7)

3x² -1 + 2x² + 6x -7

5x² + 6x -8