$2\sin^{2}t+3\sin t=2$
$4\left(2x+1\right)-\left(-6x\right)$
$k^2-16k+63$
$3\left(x+y\right)\left(x+z\right)\left(y+z\right)+x^3$
$160sin2xcos2x$
$3ab\left(a-ab+bc\right)$
$4x+3=2x+5$
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