$\left(-\frac{2}{3}a+5b-7\right)\left(\frac{1}{5}a-2ab^2+3ab-9a^2\right)$

$\left(\frac{x}{\sqrt{2}y}\right)^2$

$x^2-8x+11\le0$

$\frac{4a^2-9a^2b^2}{36}$

$5\left(3x-5\right)\left(x+4\right)=0$

$\frac{dy}{dx}=y\left(\sec\left(x\right)\right)^2$

$\int sin^5\left(5t\right)cos\left(5t\right)dt$