$-16x^2-64x+40$
$12\left(\frac{5x}{5}\right)$
$\left(6\right)\left(7\right)\left(-2\right)\left(0\right)$
$x+10=-x-8$
$\frac{4x^3\:+\:2x^2}{x^2}$
$3x^2-18x-15=0$
$cosa\left(tana+cota\right)=csca$
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