$7x^2-16x+9=0$
$\frac{\left(4b^3+25b^2+22b-21\right)}{\left(b+5\right)}$
$8x^3-x^2+9x^2+x^3$
$3z+8y-3z+z-7y$
$72\:-\:9$
$\int-sin\left(x\right)\left(1+cos\left(x\right)\right)^3dx$
$\lim_{x\to1}\left(\frac{\sin\left(2x-2\right)}{x-1}\right)$
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