27-09-2016
Mathematics

contestada

If x is a real number so that x^3 = 8, then x^2 + x =

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Kunchan Kunchan

27-09-2016

x^3 = 8
x^3 = 2^3
x = 2

x^2 + x
2^2 + 2
4 + 2
6

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