$56a^2-8a$

$\left(2x+3y-5\right)-\left(7x-6+2\right)$

$\frac{1}{16}\cdot x^6+\frac{1}{4}\cdot x^3\cdot y^4+\frac{1}{4}\cdot y^8$

$\left(2n+1\right)^3$

$e^{3\left(e^f-1\right)}$

$\int_{-3\pi}^{3\pi}\left(\frac{cos\left(z\right)}{\sqrt{6+sin\left(z\right)}}\right)dz$

$6\left(3-4x\right)=-11\left(x+9\right)$