$\left(1+\cos2\left(x\right)\right)\tan\left(x\right)=\cos\left(x\right)$
$\int\left(\frac{2z}{\left(2z-1\right)\left(z+2\right)}\right)dz$
$x^5-x^3+2x^4-3x^6$
$\left(-0.06\right)+\left(-0.01\right)$
$\left(5-4x\right)^2$
$-9-\left(-10+\left(15-25\right)\right)$
$\left(\frac{1}{6}m+\frac{2}{7}y\right)\left(\frac{1}{5}m-\frac{2}{7}y\right)$
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