$\sqrt{-625}$
$5+x+x^2-4x$
$x-x^2\cdot4x$
$\int\frac{\left(16x+9\right)}{\left(8x^2+9x+7\right)}dx$
$\left(1+sen\left(\theta\right)\right)\left(1-sen\left(\theta\right)\right)$
$6\:+\:l\:=\:l\:+\:6$
$\left(\frac{5}{4}f+\frac{7}{3}g\right)\left|\frac{5}{4}-\frac{7}{3}g\right|$
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