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Question

Use factor theorem to find whether polynomial g(x) is a factor of polynomial f(x).

f(x) = x36x2 + 11x - 6; g(x) = x - 3

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Solution

We know that if g(x) is a factor of p(x) then the remainder will be zero. Now,

f(x) = x36x2 + 11x - 6; g(x) = x - 3

Let x - 3 = 0, then x = 3

Remainder = f(3)

=(3)36(3)2+11× 3 - 6

= 27- 54 + 33 - 6

= 60 - 60 = 0

Remainder is zero,

x - 3 is a factor of f(x)


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