Question

If (4x + 1) is one of the factors of p(x) = 4x³ + 5x² - 23x - 6, then p(x) = 0 when x =

Options :

A. 1/4
B. 1/2
C. -1/2
D. -1/4

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Answer 1

THE CORRECT OPTION IS D

Given

4x+1 is a factor of p(x) = 4x³ + 5x² - 23x - 6,

so

4x+1 =0

4x = -1

x = -1/4

Answer -p(x) = 0 when x = -1/4