$\sin^2\left(2bx\right)$
$-\frac{3}{4}xy+2xy$
$9r\:-\:55\:=\:-9r\:+\:53$
$3a^2-5a-2$
$4.219+0.41+4.219$
$\lim_{t\to1}\left(t^2-x\right)$
$\int\left(8x\left(x^2+1\right)\right)dx$
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