$\:x^2-6\cdot x+10=0$
$\left(\frac{5}{6}a+\frac{3}{7}b\right)^2$
$7.45\cdot8.80$
$2u^2-u\sqrt{2}$
$\cos^2\left(a\right)\cdot\csc^2\left(a\right)\cdot\tan^2\left(a\right)=1$
$x^2+x+1\ge0$
$\:x^2\:-\:x\:+\:20\left(x-5\right)$
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