$3-2+7+9-5+1-7$

$\frac{\left(m^3-7m^2-23m+21\right)}{\left(m+3\right)}$

$\left(4m^2-3\right)^2$

$\left(2a-85\right)^2$

$\left(1+\sin\left(a\right)\right)\left(1-\sin\left(a\right)\right)=\frac{1}{\sec\left(a\right)}$

$\int\left(\left(\frac{9}{\left(2+x\right)^2}\right)\right)dx$

$432-2-3-6-2$