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Factor the trinomial x2 - 2x - 8 Write each factor as a polynomial in descending order?
Updated: 4/28/2022
Wiki User
∙ 13y agoBest Answer
x**2-2x-8
Multiply first 2 terms:
1*-8=-8
Find factors that add up to second term:
-2, 4 --> -2+4 = 2
-4,-2 --> -4+2 = -2
Rewrite:
x**2+2x-4x-8
Factor sets of terms
x**2+2x=x(x+2)
-4x-8=-4(x+2)
x**2+2x-4x-8 = x(x+2)-4(x+2)
Factor
x(x+2)-4(x+2) = (x+2)(x-4)
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