$\sin xcosy+cosxsiny$

$\int\frac{\cosh\left(t\right)}{\sinh\left(t\right)^2+\sinh\left(t\right)^4}dx$

$\left(3\sqrt{3}-2\sqrt{7}\right)\left(3\sqrt{3}+2\sqrt{7}\right)$

$32.1-7.4$

$h\left(x\right)=\left(x^2+1\right)\left(x+1\right)\left(x+3\right)\left(x^2+2x-3\right)$

$\frac{\left(12\right)\left(10\right)\left(-4\right)}{\left(-5\right)\left(-3\right)\left(-1\right)}$

$2\:x-3\ge7$