$29x^2\cdot4x^2$
$\frac{9}{4}x^9+3x^8-\frac{15}{2}x^5$
$-70a^4+21ab+56a$
$4cos^2\left(a\right)-3$
$cos\left(x\right)=\frac{1-sen^2\left(x\right)}{1-cos\left(x\right)}$
$\frac{3^4\cdot27^{10}}{81^8}$
$\left(2x+10\right)\left(x-5\right)$
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