$\lim_{x\to-infinity}\:\frac{\left(\left(6\left(2^x\right)\right)-\left(5\left(2^{-x}\right)\right)\right)}{\left(7+\left(8\left(2^x\right)\right)\right)}$

$\lim_{x\to0}\left(3x^2-4x+1\right)$

$\lim_{x\to-\infty}\left(-5x^3+8x-3x^6\right)$

$\left(x-\frac{17}{6}\right)^2$

$\left(x+6\right)\left(x^2+2x+7\right)$

$\left(10\right)x\left(-2\right)$

$\int\frac{5}{\left(x+3\right)\left(x-3\right)}dx$