$\left(5y+2x\right)xm$
$\left(3x\:+\:2y\:+\:3z\right)^2$
$\frac{-16m^4n}{24m^9n}$
$145+90$
$12m+48$
$\frac{1}{1-\sin\left(a\right)}+\frac{1}{1+\sin\left(a\right)}=2$
$-28^2+35x$
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