Odpowiedzi

2010-03-29T19:58:24+02:00
A(2ab+b)-b(a-2ab+ a²) = 2a²b+ab-ab-2ab²+a² = 2a²b-2ab²+a²
2010-03-29T20:01:41+02:00
2a²b+ab-ab+2ab²-a²b=2a²b+2ab²-a²
2010-03-29T20:01:43+02:00
A(2ab + b) - b(a- 2ab + a² ) =2a²b+ab+ab+2ab²-a²b=2a²b+2ab²-a²b= 4ab4 (do potegi czwartej)