$\left(6x^2\right)^2-2\left(6x^2\right)\left(\frac{1}{2}xy\right)^2+\left(\frac{1}{2}xy\right)^2$

$1-2\cdot sin^2\left(x\right)\cdot cos^2\left(x\right)-2\cdot sin^4\left(x\right)-cos\left(2x\right)$

$\int_0^{\frac{\pi}{4}}\left(\frac{1}{1-sin\left(x\right)}\right)dx$

$x^2y+4xy^2^2$

$\left(8x^2+9y\right)\left(8x^2+1y\right)$

$xy^2y'=x+8$

$\int\frac{1}{2}cos\frac{x}{6}dx$