$5x\:-\:4\:\le6$
$10x^2-4x\left(2x+5\right)+3$
$u^3+b^3$
$x^2+8x+9=0$
$sin\left(x\right)cox\left(3x\right)+cos\left(x\right)sin\left(3x\right)=\frac{\sqrt{3}}{2}$
$\lim_{x\to\infty}\left(\frac{2x^5-x^3}{-x^2+4x+1}\right)$
$-184+525$
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