$4z^2+8z+4=0$
$5x\cdot10y$
$-\frac{3}{8}\cdot x-\frac{1}{4}>-1$
$4\:\:2\:-24\:17\:-3$
$81a^6b^4c^2-126a^5b^6c+49a^4b^8$
$\left(\frac{\left(1+2x^2\right)}{15-11x}\right)^4$
$\left(3a^2+5b^2\right)^2$
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