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Find the value of a, if x- A is a factor of P (x) is equal to x cube minus ax square + 2 X + a - 1​

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Secondary SchoolMath 5+3 pts

Find the value of a if X-a is a FACTOR of x3-ax2+2x+a-1

Report by Varunbala29 25.03.2018

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StephCurry

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StephCurry

thx buddy

Brainly User

Hi there !!!

Given,

x - a is a factor of

{x}^{3} - ax {}^{2} + 2x + a - 1

we know,

x - a = 0

x = 0+a = a

Substitung the value of x as a,

we have,

(a)^3 - a(a)^2 + 2(a) + a - 1 =0

a^3 - a^3 + 2a + a - 1=0

3a - 1=0

3a =1

a = 1/3

Thus

a = 1/3


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