$1,17a-2,15a-3,25a+4,14a$

$6e^{-\infty}-2$

$\left(-15\right)\cdot\left(-6\right)$

$\int\frac{2x^2+18x+37}{x\left(x+3\right)^2}dx$

$\int y.sen\left(y\right)dy$

$1+\left(\sin\left(x\right)-\cos\left(x\right)\right)\left(\sin\left(x\right)+\cos\left(x\right)\right)=1-\cos\left(2x\right)$

$\left(5a-6\right).\:\left(5a+2\right)$