Question

The polynomial x3 + 8 is equal to

Answer 1

${x}^{3} + 8 = 0 \\ {x}^{3} = - 8 \ \\ x = \ \sqrt[3]{ - 8} = \sqrt[3]{ - 1 \times 8} \\ x = 2( \sqrt[3]{ - 1} )$