$b^2\:4b+4$
$22x+32x-43x-24x-14x+37x+41x-10x+7x+23+17x-14x+x-22x-42x+32$
$\frac{11.9}{98.1}$
$-x^2+7x+3$
$2^1\cdot2^{-3}$
$4x+13^2$
$\frac{3x^2+6}{3x-3}$
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