factorise x cube + 13 x square + 32 X + 20 if it is given that X + 2 is its factor
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Answered by
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Answer:
Step-by-step explanation:
X + 2
X= -2
Put x = -2 in the equation
X^3 + 13x^2 + 32x + 20
(-2)^3 + 13(-2)^2 + 32(-2) + 20
8 + 104 -64 + 20
8+ 36 + 20
64
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