$\left(a-26\right)^2-\left(x+y\right)^2$

$x-\frac{y}{\frac{x}{y}+\frac{y}{x}}$

$\ln\left(m\right)=w-8$

$\left(3xy\right)^0$

$\int\left(3x^2-1\right)\left(2x^3-2x\right)^6dx$

$\left(8x\:cos\left(9x\right)\right)dx+\left(6y^5+6\right)dy=0$

$\frac{m^8}{49}-\frac{4x^6}{64}$