Question

Aduceti la forma ce mai simpla expresie

Answer 1

1) $\frac{a^{2} - 4a +4 }{ a^{2} + ab^{2} - 2a -2b ^{2} } = \frac{(a-2) ^{2} }{( a^{2}-2a) +(ab^{2} -2b^{2}) } = \frac{(a-2) ^{2} }{ a(a-2) + b^{2}(a-2) } = \frac{(a-2) ^{2} }{(a-2)(a+b ^{2}) }$