$\left(t+5x\right)^2$

$\log_{243}\left(x\right)=\frac{4}{5}$

$4x+5<6$

$2x\frac{dy}{dx}-5y\left(x-1\right)=0$

$\lim_{x\to3}\left(\left(x-4\right)\left(x-2\right)\right)$

$\int_1^4\frac{9-\sqrt{x}}{\sqrt{x}}dx$

$4\left(x+y\right)^2-28\left(x+y\right)\left(x-y\right)+49\left(x-y\right)$