$\:3x^3-2x^2-3xy+2y$
$0.45w-w$
$10\cdot1+3$
$\frac{1}{csc\left(y\right)-cot\left(y\right)}$
$\sin\left(x\right)+\cos\left(x\right)^2-\sin\left(2x\right)=1$
$y^2-7y-30$
$\lim_{x\to\infty}\left(\frac{x^2-4x+4}{sin\left(x-2\right)^2}\right)$
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