Question

if(x-a)is a factor of polynomial (x³-ax²+2x+a-1)then a=.......​

Answer 1

Answer:

x-a = 0

x = a

= (x³-ax²+2x+a-1)

= a³-aa²+2a+a-1

= a³-a³+3a-1

= 3a-1

3a = 1

a = 1/3

Answer 2

Answer:

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