Question

Find the value of the function f(x) = x2 + 4x - 3, when x = -1.

Answer 1

- 6

Explanation:

`f(x) = {x}^(2) + 4x - 3 \\ \: plug \: x = - 1 \\ f( - 1) = {( - 1)}^(2) + 4( - 1)- 3 \\ f( - 1) = 1 - 4- 3 \\ f( - 1) = 1 - 7 \\ \huge \red{ \boxed{ f( - 1) = - 6}} \\`