Question

what are the factor of x3-1?​

Answer 1

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Answer 2

zzAnswer:

(x -1) [ x^2 +x +1]

Step-by-step explanation:

x^3 - 1^3 = (x -1)^3 + 3x (x -1)    [a^3 - b^3= (a -b)^3 +3ab(a-b)

= (x -1) [(x -1)^2 +3x]      

= (x -1) [x^2 -2x(1) +1^2 +3x]     [(a -b )^2 = a^2 -2ab +b^2]

=(x -1) [ x^2 +x +1]

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