$4x^2+20x+7$

$\frac{dq}{dz}=7+sin\left(z\right)$

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

$\left(2^7\right)^2$

$2+2n\ge8$

$10-5.6$

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