$\int0.06\cdot\left(t+1\right)\cdot0.96^{-t}dt$

$3x^2-34x+70$

$\frac{d}{dx}\left(\frac{\left(x+2\right)^9}{\left(2x-2\right)^8}\right)$

$10+0,65-1,5$

$\left(1-\sin\left(x\right)^2\right)\frac{1}{\sin\left(x\right)^2}=\cot\left(x\right)^2$

$\sin\left(x\right)^2.\sin\left(x\right)^8$

$-2x\cdot4$