Question

Given f (x)= 2x^2+3+5, find f (-1)

Answer 1

2(-1)^2+3+5

2(1)+3+5

5 + 5

answer: 10

Answer 2

f(-1) = 10

Explanation:

f(x) = 2x² + 3 + 5

f(-1) = 2(-1)² + 8

= 2×1 + 8

= 2 + 8

= 10