Question

$y=(x^2+2)(x^3+1)$

Answer 1

$y = ( {x}^{2} + 2) \times ( {x}^{3} + 1) \\ 0 = ( {x}^{2} + 2) \times ( {x}^{3} + 1) \\ ( {x}^{2} + 2) \times ( {x}^{3} + 1) = 0 \\ {x}^{2} + 2 = 0 \\ {x}^{3} + 1 = 0 \\ \bf \: x = - 1$