$\{ ( 4 - 6 ) + 2 ( 2 \cdot - 3 + 5 ) - 2 \}$

$4\left(x-2\right)+2\ge16$

$x\left(x+2\right)+2\left(x-1\right)\left(x+1\right)$

$4.2j+6.7j-5j-5$

$4+8\cdot3-\frac{100}{\left(-5\right)}^2$

$\left(\frac{5}{7}a^2+\frac{1}{9}n\right)^2$

$8\left(w\:+\:z^2\right)\:-\:10w\left(w\:+\:z\right)$