factorise 2x^3-x^2-13x-6
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Answer:
(x-2) is factor
Step-by-step explanation:
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f(x) = 2x3 + x2 − 13x + 6.
Factors of constant term 6 are ±1, ± 2, ± 3, ± 6.
Putting x = 2, we have:
f(2) = 2(2)3 + 22 − 13 (2) + 6 = 16 + 4 − 26 + 6 = 0.
Hence (x − 2) is a factor of f(x).
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(2x + 1)* (x + 2)* (x - 3)
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