$\left(5x-7y\right)\left(5x-7y\right)$

$\frac{a^3+a^2-2}{2-\sqrt{a+3}}$

$\left(-5\:+\:2c\right)\left(-2\right)$

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

$\int\:10\sec^3\left(2x\right)dx$

$\left(\frac{-y^{\frac{3}{2}}}{y^{\frac{1}{3}}}\right)^3$

$2\cdot\frac{1}{2}\cdot1+6\left(3^2+4^2\right)-4\cdot5^2$