$7x+4=32$
$\left(2x^9+4y^4\right)\left(3x^3-7y^8\right)$
$a-4a$
$3x^2-2x+6$
$\left(3a-b^3\right)^2$
$2x+11x+11$
$\frac{sin^4\theta\:+\sin\:^2\theta\:\cdot\:\cos\:^2\theta\:}{1+\cos\:\left(\theta\:\right)}=1-\cos\:\left(\theta\:\right)$
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