$1-0-0-2-0-5-0-6-0-15$
$\left(2a-3b+2c\right)^2$
$-\frac{7x^3y^2}{x^3y^2}$
$12\left(8\:-\:2\right)$
$3x^2-30x+70$
$x-7=2x+1$
$\int\frac{7\cos\left(2x\right)}{1+\sin\left(2x\right)}dx$
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