$2-\cos^2x=1+\sin^2x$

$10x^5-25x^4+35ax^3-75a^2x^2$

$17+\left(-36\right)-\left(-28\right)+15\left(-21\right)-\left(-24\right)-\left(-16\right)-\left(-21\right)-13$

$\int y^{10}dy$

$\int\left(5\sqrt{x}+2\right)^{-2}x^{-\frac{1}{2}}dx$

$\log\left(x^3y\right)^2$

$\frac{\left(x\sqrt{x}-a\sqrt{a}\right)}{\sqrt{x}-\sqrt{a}}$