$-4x^2y^2+2x^2-5y^2+7=0$
$y=\sqrt{100-4x^2}$
$\int\left(\sqrt{\left(4+x^2\right)}\right)\left(x^5\right)dx$
$\frac{\cos\left(a\right)+\left(\sin\left(a\right)\cot\left(a\right)\right)}{\cot\left(a\right)}=2\sin\left(a\right)$
$\left(4-\sqrt{8}\right)\left(\sqrt{8}+4\right)$
$64x^9-1$
$\int cos\left(1-\frac{2x}{3}\right)\:sin\left(\frac{3x}{2}-1\right)\:dx$
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