$\cos x-\sin^2x-1$
$-\frac{3w}{4}<-9$
$\int\frac{2x+3}{\left(x^2-4x+3\right)}dx$
$y=\left(1+\frac{1}{x}\right)^x$
$\left(7-6m\right)^3$
$\int_0^{\pi}2t\sin\left(t\right)dt$
$9.9x^4\:-\:30x^3y\:+\:25xy$
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