$\int\left(5x+2\right)^2dx$

$cos\left(\frac{x}{2}\right)-1=o$

$\int_5^8k\left(2-x\right)dx$

$-2<\left|-1\right|$

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

$sin\left(x\right)cos\left(x\right)=\frac{cos\left(x\right)-cos^3\left(x\right)}{sin\left(x\right)}$

$\left(2\right)\left(a^2+1+b^2\right)$