$\left(\frac{1}{2}-\frac{1}{2}\cos\left(2x\right)\right)^2$
$\left(-5\right)^8:\:\left(-5\right)^5$
$tan^2\left(x\right)+cot^2\left(x\right)+sec^2\left(x\right)-csc^2\left(x\right)=2$
$-4x^2+12x-5$
$\int\frac{\sqrt{x^2+2}}{x}dx$
$\frac{x^4+3x^3-2}{x^2+2x-1}$
$( 3 m + 6 g ) ^ { 2 }$
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