$cot^2\left(x\right)\cdot csc\left(90-x\right)\cdot sin\left(x\right)$

$\frac{dx}{dt}+4x+3y\:=t$

$\frac{dy}{dx}=\frac{x^3}{y\left(6+x^4\right)}$

$\int\sqrt{\left(a+bx\right)^2}dx$

$\left(sec\left(x\right)+cos\left(x\right)\right)^2+\left(sin\left(x\right)-cos\left(x\right)\right)^2=2$

$\left(5m-7\right)^2-\left(2m-3\right)^2$

$\frac{25m}{5}$