$\:\:\left(0\right)+\:\left(-0.62\right)$

$\int e^6\:\cos9t\:dt$

$-9\cdot\left(5a+b\right)$

$6x^3y^5-\sqrt{y^4}+\frac{9}{\sqrt[3]{x^4}}$

$\int\frac{17xe^{2x}}{\left(1+2x\right)^2}dx$

$\int\frac{1}{\left(x^2+8x+25\right)^{\frac{3}{2}}}\:dx$

$\frac{d}{dx}x^2-xy=y^2$