$\left(2x^2+y^2\right)\left(2x^2+y^2\right)$

$-100.\:\left(-5\right)$

$\int\left(x^3.\sqrt[3]{16+4x^2}\right)dx$

$-e^{\left(-0.16\cdot\infty\right)}$

$\log\left(8x\right)$

$\left(4x^3y^3\:+\frac{1}{x}\right)\:dx\:+\:\left(3x^4y^2\:-\frac{1}{y}\right)\:dy\:=\:0$

$\int7.7te^{-5.7t}dt$