Question

Fide f (-7) evaluate the function

Answer 1

Step-by-step explanation:

f(x)=-x²+8x

By replacing x with -7, we get

f(-7)=-(-7)²+8×(-7)

=-49-56

=-105

Answer 2

Solution:

$f(x) = { - x}^{2} + 8x \\ = > f( - 7) = - {( - 7)}^{2} + 8( - 7) \\ \: \: \: \: = - 49 - 56 \\ = - 105$