$x^2-5x+0$

$\left(x^4-5x^3+11x^2-12x+6\right)\:\:\left(x^2-x+2\right)$

$\lim_{x\to\infty}\left(\frac{5e^{-x}x^3+4x^2+3x+2}{\sqrt{1+x^4}}\right)$

$3a^{\left(2\right)}bac^{\left(3\right)}-2c^{\left(2\right)}ba^{\left(3\right)}+4a^{\left(3\right)}c^{\left(3\right)}b+2ca^{\left(3\right)}bc$

$4\ln\left(x+4\right)=-4$

$2x+y;\:x=7;\:y=1079$

$9\cdot2\:12\cdot4$