IMO answer 3
just simply divide the polynomial with (x-1)
polynomial division
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4GMAT_Mumbai
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Hi Sidon,
This is an application of the remainder theorem as described in https://en.wikipedia.org/wiki/Polynomial ... er_theorem
If the requirement is that the numerator is divisible by (x-1), the remainder is 0.
If the remainder is 0, it implies that f(1) should be equal to 0.
Just substituting x = 1 in the numerator equation and equating it to 0 yields the value of 'k' to be 3.
Hope this helps.
This is an application of the remainder theorem as described in https://en.wikipedia.org/wiki/Polynomial ... er_theorem
If the requirement is that the numerator is divisible by (x-1), the remainder is 0.
If the remainder is 0, it implies that f(1) should be equal to 0.
Just substituting x = 1 in the numerator equation and equating it to 0 yields the value of 'k' to be 3.
Hope this helps.
