$\int_{1.5}^{2.7}\left(e^{x^{3+5x}}\right)dx$

$x^2-55x+254$

$3-3\cos x=2\sin^2x$

$\sec\left(x\right)\frac{dy}{dx}=\sec\left(x\right)y^2+3y^2$

$s'+\frac{s}{\left(t+60\right)}=2$

$\left(xy\right)^2\left(xy\right)^3+\left(xy\right)^3$

$4\left(x^2+xy+y^2\right)^3-27x^2y^2\left(x+y\right)^2$