$\left(-2x^{a-2}\right)\left(7x^5-8x^2+6x^3-9x+2\right)$

$\int_1^1\left(x^2\right)dx$

$2x^2+9x-350$

$\int_{-2}^0\left(\frac{2}{x-1}\right)dx$

$\lim\:_{x\to\:\:a}\left(\frac{cos\left(x\right)\cdot\:\:in\left(x\right)-a}{in\left(e^x-e^a\right)}\right)$

$x^2+2x+35$

$-3x-7+-13x+17$