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30-11-2019
Mathematics

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Which binomial expressions are factors of 2x3+5x2−x−6?

Which binomial expressions are factors of 2x35x2x6 class=

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MathPhys MathPhys

30-11-2019

Answer:

x − 1

x + 2

Step-by-step explanation:

f(x) = 2x³ + 5x² − x − 6

Plug in the zero of each binomial. If that zero is also a zero of f(x), then the binomial is a factor of f(x).

f(1) = 0

f(-1) = -2

f(2) = 28

f(-2) = 0

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