# How do you multiply (x^(2) + 9)(x+4)?

${x}^{3} + 4 {x}^{2} + 9 x + 36$
$\left({x}^{2.} x\right) + \left({x}^{2} .4\right) + \left(9. x\right) + \left(9.4\right)$
= ${x}^{3} + 4 {x}^{2} + 9 x + 36$