alleryStart learning →Which is the complete factorisation of x^3 + 8?
A(x+2)(x^2+2x+4)
B(x-2)(x^2+2x+4)
C(x+2)(x^2-2x+4)
D(x+2)(x^2-4x+4)
Answer & Solution
Correct answer: C. (x+2)(x^2-2x+4)
With a = x and b = 2, a^3 + b^3 = (a+b)(a^2 - ab + b^2) = (x+2)(x^2 - 2x + 4).
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