Question

упростите выражение 2b-4b2/b+1 b+1/2b2

Answer 1

$frac{2b-4b^2}{b+1}* frac{b+1}{2b^2}= frac{2b(1-2b)}{b+1}* frac{b+1}{2b^2}= frac{1-2b}{b}= frac{1}{b}-2$