$1-2\sin^2x+\sin^4x$
$xy+3x+y=6$
$\frac{1-cos2x}{1+cos2x}=sin^2x$
$\int\left(x\cdot\left(x+1\right)\right)dx$
$12x+48$
$\left(1+2y\right)dx=\left(x^2-4\right)dy$
$8x^6-32x^5$
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