Question

If (x-1)³=8, what is the value of (x+1).

Answer 1

$(x - 1) ^{3} = 8 \\ (x - 1) = \sqrt[3]{8} \\ x - 1 = 2 \\ x = 3 \\ (x + 1) = (3 + 1) \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = 4$