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

$\frac{d}{dx}x\sqrt{x^2+42}$

$x2-bx+\frac{49}{4}+0$

$\left(\frac{4x^3}{5}\right)\left(-\frac{2}{x}\right)$

$\left(\sqrt[3]{ab}+\sqrt[3]{rs}\right)\left(\sqrt[3]{\left(ab\right)^2}-\sqrt[3]{abrs}+\sqrt[3]{\left(rs\right)^2}\right)$

$\left(10x^23-3x+4\right)$

$289\:a^{10}-\:64\:b^{12}$