Question

Let f(x) = 3x2–5, find f(-5). A. 70 B. 71 C. 72 D.73

Answer 1

Given equation:

$f(x) = 3x2 - 5$

• If x=-5

Solution:

$f( - 5) = 3( - 5)2 - 5 \\ = 3 \times - 5 \times 2 - 5 \\ = - 30 - 5 \\ = - 35$

Solved ✔︎