Question

15.
Find the value of f(x) = 2x2 + 7x + 3 at x = -2
16. Find the value of
125​

Answer 1

Answer:

Step-by-step explanation:

15. f(x)=2x² + 7x +3

     = 2(-2)² +7(-2) +3

     = 8 - 14 + 3

     = -3

∴ The value of f(x) at x = -2 is -3.

16. 125= 5 × 5 × 5

          = 5³