$2x-3y=-8$

$\int\left(\frac{7x^3}{\left(x^{\left(4\right)}+1\right)^3}\right)dx$

$14-20+255-30-35$

$4x^2+4x-285$

$\int16\cdot x\cdot e^{4x}dx$

$\frac{\sec\:\left(x\right)}{1+\cos\:\left(x\right)}=\frac{\tan\:\left(x\right)}{1+\sin\:\left(x\right)}$

$\left(-2+\frac{1}{n}\right)^2$