$92\cdot36$

$4\left(x^2+x^3\right)^3\left(2x+3x^2\right)$

$50-\left(-43\right)$

$7tan\left(4a+199\right)=8\sin\left(4x+199\right)$

$\frac{\left(x^{-9}y\right)^{-5}}{\left(x^{0}y^{-1}\right)^{5}}$

$\lim_{x\to0}\frac{2-2\cos\left(x\right)}{\sin\left(4x\right)}$

$1-18g-81g^2$