$16m^2-40m+25$

$\frac{1+sin\left(x\right)-cos\left(x\right)}{1+sin\left(x\right)+cos\left(x\right)}=tan\:\frac{\left(x\right)}{2}$

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

$\frac{\tan^2\left(x\right)^{\cos\:\left(x\right)}}{\sin^2\left(x\right)}$

$5x^2-149=96$

$3+\left(-2\right)-\left(-4\right)+12$

$x\left(7x+21\right)$