0
x3+8=0
(x-2) (x2-2x+4)<----- use Quadratic formula
x-2=0 =1+/- 1i sqrt 3
x=2
-For the first step, it's actually (x+2) (x^2-2x+4), not (x-2) (x^2-2x+4).
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Earn +20 ptsQ: How do you factor the expression x cubed plus 8?
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2 cubed plus 2 cubed plus 2 cubed?
2 cubed = 2*2*2 =8. 8+8+8= 24
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Since 7x + 13x +2x + 8 is an expression (there is no equal sign), there is no answer as to what x equals. However, this expression can be simplified to 22x + 8.
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