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OpenStudy (anonymous):
I really don't understand how to factor and solve this x^3-27=0
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OpenStudy (p0sitr0n):
x^3-3^3=0
OpenStudy (triciaal):
27 can be written as 3^3 x^3 = 3^3 so x = 3
OpenStudy (acxbox22):
(x-3)^3=0 x-3=0 x=3
OpenStudy (triciaal):
sorry to factor use the difference of 2 cubes x^3 - 3^3 = (x-3)(x-3x^2 *3 + 3 x*3^2
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