Question

Find the value of a, if (x - a) is a factor of x³-a²x + x + 2.
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Answer 1

ATQ -----

x-a = 0

so,, x = a

Put x=a in equation.---

a^3-a^2×a+a+2 = 0

a^3-a^3+a+2 = 0

a+2 = 0

So,,,a = -2

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