find the value of a , if x-a is a factor of
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Zero of ( x - a ) = 0
x = a.
By Factor theorem ,
p ( x ) = x³ - ax² + 2x + a - 1
p ( a ) = ( a)³ - a (a²) +2a + a - 1 = 0
⇒ a³ - a³ +2a+ a - 1 = 0
⇒ 3a - 1 = 0
⇒ a = 1/3.
So, the value of a is 1/3.
x = a.
By Factor theorem ,
p ( x ) = x³ - ax² + 2x + a - 1
p ( a ) = ( a)³ - a (a²) +2a + a - 1 = 0
⇒ a³ - a³ +2a+ a - 1 = 0
⇒ 3a - 1 = 0
⇒ a = 1/3.
So, the value of a is 1/3.
sonisupriya1:
i think you forgot to put +2x
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