$\tan\left(x+y\right)=\frac{\cot\left(x\right)+cot\left(y\right)}{\left(cot\left(x\right)\cdot cot\left(y\right)\right)-1}$

$\frac{1}{4}y>8$

$\left(-18\right)\cdot94\cdot\left(-104\right)$

$4\le\left(x+2\right)-3\left(x-5\right)$

$\frac{-x^4+3x^3+x^2+4x+5}{x^3+x+1}$

$\int_0^{12}\left(-\frac{5}{12}x^3+64.7x-187.0\right)\left(\frac{1}{3}x-\left(x-8\right)\right)dx$

$m^2-25a^2$