$\left(-8\right)\left(-9\right)-2$

$4x^2-8x=8$

$y\frac{dx}{dy}=x-1$

$\int\frac{ln\left(t\right)}{t^7}dt$

$\left(1-\tan\left(x\right)\right)^2\left(1+\tan\left(x\right)\right)^2+4\tan^2\left(x\right)=\sec^4\left(x\right)$

$\lim_{n\to\infty}\left(\frac{1}{6n^{\frac{4}{3}}+9}\right)$

$5+\left(6-\left(8+5-6\right)\right)-\left(7-4+3\right)-\left(2-\left(4-5\right)\right)$