$3\sin^2x=7\sin x-4$
$0.22+4.08+57.90$
$\left(xz-yw\right)\left(xz+yw\right)$
$4g+4+4g$
$\:\int\:x^2\sqrt{4+\frac{1}{3}x^3}dx$
$r^2-20r+2$
$-4x^2y^2\cdot4x^3y^3$
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