Question

the value of k if x-1 is a factor of 4x^3+3x^2-4x+I is.​

Answer 1

Let p(x) = 4x³ + 3x² - 4x + k

Since, x-1 is a factor of p(x)

p(1) = 0

p(1) = 4*1 + 3*1 - 4*1 + k = 0

4+3-4+k = 0

k = -3

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