$17x^5-51x^4+34x$

$\frac{dy}{dx}=\frac{1+\frac{3y}{x}}{1-\frac{y}{x}}$

$x+8=5\left(2x+7\right)$

$\left(1+10x+\:10y\right)+\left(100x+90y\right)$

$\left(a+b\right)x^2+3\left(a+2b\right)x^b-5abx^2$

$f\left(x\right)=\sec\left(5x^2+2x\right)$

$\int e^{\ln\left(x^2\right)}dx$