$\sec\left(x\right)^2+\csc\left(x\right)^2=\frac{1}{\sin\left(-0.8\right)^2\cdot\cos\left(x\right)^2}$

$\left(6a+8\right)-\left(3a+2\right)$

$\frac{\left(-1\right)^nx^n}{n^25^n}$

$\int\left(2\left(5+x^2\right)^{\frac{3}{2}}\right)xdx$

$\left(9x^2y^2-\frac{1}{5}c^2\right)^2$

$3x=\frac{5x-10}{5}$

$2\cos\left(x\right)^2-3\cos\left(x\right)=2$