Question

2 is the root of x
$x3 - 8 = 0$
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Answer 1

if 2 is the root of x then x=4 then x3 - 8 = 43 - 8 = 64 - 8 =56

Answer 2

Step-by-step explanation:

x^3 - 8 = 0

x^3 - 2^3 = 0

(x-2)(x^2 + 4 + 2x) = 0

x = 2

x = 2

x = -2