$a^4-3a^2+9$
$6sinxcosx=2$
$\frac{dy}{dx}=y\left(1+x+x^2\right)$
$p+q^2=14$
$\int_0^{\infty}\left(\frac{x+1}{\sqrt{x^2+2x}}\right)dx$
$h\left(t\right)=\frac{\left(t^2\right)^2}{\left(t^3+2\right)^2}$
$y=\frac{x^2+x+1}{x-2}$
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