$6.88-3.537$

$\sqrt[4]{x}+1\:\left(\sqrt[4]{x}-1\right)\left(\sqrt{x}+1\right)\left(x+1\right)\left(x^4+x^2+1\right)$

$\lim_{x\to0}\left(\frac{a^x-b^x}{2}\right)^{\frac{1}{x}}$

$x^2+40x+37$

$\left(y-2x\right)\left(y-w\right)$

$17x^3+\:12x^2-3x^3+7x^2$

$\int\:\:te^{13t}dt$