$\int_{16}^{18}\pi\left(\ln\left(0.8x\right)+2\right)^2dx$
$-10x+5x^2-6x^2+18x-x^2+3x+4x^2+10x$
$\frac{4x^2+20x-10}{4k}$
$r^2-12r+36$
$3\left(9v+7\right)+5v$
$750+50x>1000$
$y=\left(5x^2+8\right)\left(9x-2+\frac{5}{x}\right)$
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