$3x-4\left(y+3\right)-10+8x$

$\int\frac{1}{\sqrt{\left(x+1\right)^2+25}}dx$

$\int\frac{1}{\csc\left(2\cdot x\right)-\cot\left(2\cdot x\right)}$

$cos\:xcot\:x$

$\left(1-a\right)\left(1+a+a^2+a^3+a^4\right)$

$\int\cos\left(\frac{1}{4}x\right)dx$

$4x^2+15x^3\sqrt{15x^6}-20x^5+10x^4-5x^3$