$3ab^2\sqrt{c};\:a=1;b=2\:;\:c=\frac{1}{4}$

$9\left(x^2+36x\right)$

$\frac{1}{1+sin\left(x\right)}+\frac{1}{1-\sin\left(x\right)}=2\sec^2\left(x\right)$

$\left(m-3n\right)-4n\left(2n-m\right)+8$

$4x^2+8x+5=0$

$-13x^3y^3\left(15x^5y^5\right)$

$\left(x^2+3x+4\right)^3$