$\left(4a+2b-5c\right)^3$
$49x^2+12x+9=0$
$28+3x=10x$
$4\left(3\right)^2-\left(4\right)^2$
$\left(x^2-x-3\right)^2$
$6c^2-7c-3$
$x^2+12x^2+36$
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