$\int\left(15x^5-6x^4+12x^2-2x\right)dx$

$1+\tan\left(x\right)=\frac{\cos\left(x\right)+\sin\left(x\right)}{\cos\left(x\right)}$

$\int\frac{1}{x^2-64}dx$

$-4\left(x+3\right)+1$

$\sqrt[1]{-3}$

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

$\left(f.g\right)\left(1\right)$