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Question
If x − a is a factor of x3 −3x2a + 2a2x + b, then the value of b is
Options
0
2
1
3
Solution
As (x-a)is a factor of f(x) =x3 −3x2a + 2a2x + b
i.e. f(a) = 0
`a^3 - 3a^3 + 2a^3 +b =0`
Thus,b = 0
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