Factor the polynomial and use the factored form to find the zeros. (Enter your a

Algebra
Tutor: None Selected Time limit: 1 Day

Factor the polynomial and use the factored form to find the zeros. (Enter your answers as a comma-separated list.)
P(x) = x3 − x2 − 20x
x = 
 
Jul 14th, 2015

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x³ + x² – 20x
 = x[x² + x – 20]
 = x[x² + 5x – 4x – 20]
 = x[x(x + 5) – 4(x + 5)]
 = x[x + 5)(x – 4]
So answer is
 The solution is {-5, 0, 4}.


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Jul 14th, 2015

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