$\left(-9x^2-10y\right)^2$
$-4\cdot110$
$4c^2+16cd-16d^2$
$7a-3b+6+3b$
$\sqrt{2}sin^\theta\:+\:2sin\:^\theta\:=sin\:\theta\:+\:2\:sin^\theta$
$\frac{ds}{dt}=11s$
$x^2-8x+81=25$
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