$3-\sqrt{x+2}=7$
$2x^2-28+98$
$11b^2-2b-2b^2-18-2b+14$
$5x+29+9x-15$
$b^2+49=0$
$-14-6x^2+2x-4x^3-1$
$\left(3x^2+5^3\right)$
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