Question

Given f, left bracket, x, right bracket, equals, 4, x, squared, minus, 3, x, minus, 16f(x)=4x
2
−3x−16, find f, left bracket, minus, 2, right bracketf(−2)
Answer

Answer 1

To find f(-2), we substitute -2 into the expression for f(x):

f(x) = 4x^2 - 3x - 16

f(-2) = 4(-2)^2 - 3(-2) - 16

f(-2) = 4(4) + 6 - 16

f(-2) = 16 + 6 - 16

f(-2) = 22 - 16

f(-2) = 6