Question

8. Evaluate the polynomial function
f(x) = -2x4 + 6x3 - 3x + 11 when x = 4
(
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Answer 1

f(4) = -129

Explanation:

Substitute the value of x which is 4

f(x) = -2x4 + 6x3 - 3x + 11

f(4) = -2(4)4 + 6(4)3 - 3(4) + 11

f(4) = -2(256) + 6(64) - 12 + 11

f(4) = -512 + 384 - 1

f(4) = -128 - 1

f(4) = -129