$-2x-2y-63$

$\frac{\left(\left(x+3\right)^2\right)}{\left(x+2\right)^5\left(x+4\right)^7}$

$\left(1+\cot\left(x\right)^2\right)\sin\left(x\right)$

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

$\frac{1}{2}a-\frac{8}{4}a$

$27x^2+12x-7=0$

$\left(-5\right)\left(-6\right)-\left(-8\right)$