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Question

If f(x) = x3 + x2 − ax + b is divisible by x2 − x write the value of a and b.

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Solution

We are given is exactly divisible by then the remainder should be zero

Therefore Quotient and

Remainder

Now, Remainder

Equating coefficient of x, we get

.

Equating constant term

Hence, the value of a and b are


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