$\frac{1}{1-\sin\left(x\right)}=\sec^2\left(x\right)+\tan\left(x\right)\sec\left(x\right)$

$\left(-3\right)^4-\left(-2\right)^3$

$\int\sin^4x\cos^7xdx$

$\sqrt{\frac{1}{2}ab^3\cdot8ab}$

$5^3.5^2$

$sin^2\left(wt\right)-icos\left(wt\right)sin\left(wt\right)+iwt$

$6\left(5z+8\right).$