$=4^{2+6}$
$5p-10-3p+8$
$\frac{1}{2}\cdot10+2\frac{3}{4}\cdot2$
$-20-\left(-40\right)+80-\left(-30\right)+\left(-35\right)$
$\left(x-y\right)\left(3x+6\right)$
$\left(3r-2t\right)^2$
$\frac{x+3}{3x-2}-\frac{x-3}{3x+2}=\frac{44}{9x^2-4}$
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