$\left(9x-2b\right)^2$
$\:8x\:-\:7\:<\:1$
$x^2+11x-12$
$5x+6y=78$
$\lim_{x\to\infty}\left(\left(-\frac{0.25.x^3}{x^4+0.25\cdot x^2}\right)^2\right)$
$\frac{z}{\left(z+1\left(z+3\right)\right)}$
$\int_{\pi}^{\frac{7\pi}{6}}\frac{7cosx}{-5+3sinx}dx$
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