$\left(-2\right)\left(-4\right)\left(1\right)\left(1\right)$
$g\left(x\right)\:=\:x^2\:+4x\:-5$
$2x-3=x+1$
$\frac{\sqrt{2}+\sqrt{2}\tan\left(67.5\right)}{2}=\sqrt{2}+1$
$6a^4+24+10a^2$
$\frac{dy}{dx}=\frac{\left(x+2\right)^2}{x^5}$
$9+7r+17r+7\:para\:r\:9$
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