$-3\left(2d+4\right)-5\left(d-6\right)$
$2\cos^2x-3$
$\left(\frac{1}{3}ab+\frac{1}{9}a^2-\frac{1}{6}b^2\right)+\left(\frac{3}{4}b^2\frac{1}{g}ab+a^2-\frac{3}{2}ab\right)$
$\int\frac{x^{10}}{\left(49-x^2\right)^{\frac{13}{2}}}dx$
$-8.05=n-7.6$
$7-10-5-4+6-1$
$2x\left(9-5x\right)$
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