Question

If f(x)=-3x^2-5x+7, find f(-2)

Answer 1

Answer:

29

Step-by-step explanation:

f(x) = 3x² - 5x + 7

f(-2) = 3(-2)² - 5(-2) + 7

     = 3×4 + 5×2 + 7               [ negative × negative = positive ]

     = 12 + 10 + 7

     = 29

Answer 2

f(-2)=3(-2)^2-5(-2)+7
3*4-(-10)+7
7+10+7
=24