Equation with fractional exponent

(x + 5)^(2/3) = 4

x + 5 = √64 {took both sides to the 3/2 power, that means to take to the third then do square root}
x + 5 = ±8 {evaluated square root of 64}
x = -5 ± 8 {subtracted 5 from both sides}
x = 3 or - 13 {evaluated the ± sign}

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