$\int\left(\frac{1-\sin^2\left(x\right)}{\cos\left(x\right)}\right)dx$
$7x^2+4\sqrt{x}^2$
$a^2b^8-9c^{12}$
$3x^5-3x$
$\frac{x^2+2x-15}{x^2-x-6}$
$\left(x-1\right)^2-3x\ge0$
$sin\left(4x\right)=8sin\left(x\right)cos^3\left(x\right)-2sin\left(2x\right)$
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