$\lim\:_{x\to\:1}\left(\frac{8x^{\frac{7}{4}}-5x^{\frac{4}{5}}-3}{x^2-1}\right)$

$\left(-5\right)+\left(-6\right)-\left(-3\right)$

$\left(-9.6\right)+-4$

$\int_0^2edx$

$\lim_{x\to\infty}\left(\frac{ln\left(7x+5\right)}{ln\left(8x+10\right)+2}\right)$

$\left(2x^2-1\right)\left(x-2\right)$

$\frac{\text{sen}\alpha}{\csc\alpha}=1$