$\lim_{x\to0}\left(\ln\left(x\right)\cdot\left(2x-\sin\left(x\right)\right)\right)$

$\left(9x^7\:+\:4x^7\right)^3$

$\frac{1}{2}\sec\left(x\right)\csc\left(x\right)$

$2x^2m^4-4xm^5+16x^3m^2$

$f\left(x\right)=-5x+5$

$\left(-3\right)\cdot\left|\left(-9\right)+7\right|$

$\frac{2}{3}ab+2a-\frac{1}{3}ay+\frac{2}{3}a^{2}b-5a$