$-9+10-\left(-5\right)+\left(-6\right)-4+3-\left(-7\right)$
$\left(11a-7b\right)^2$
$\int\:\frac{\sqrt{y}-y}{y^2}dy$
$121r^3s^4+77r^2s^4-55r^4s^3$
$25b^2-10ab+a^2$
$3ydy\:=\:4xdx$
$\frac{9x^3-12x^2+8x-6}{x+1}$
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