Odpowiedzi

2010-03-17T12:44:10+01:00
A) 4(2y-7y2)-3(y2-3y) = 8y-28y2-3y2+9y = 17y-31y2
b)-5(2b=3z)+2(2b-4z) = -10b+15z+4b-8z=6b+7z
2010-03-17T12:46:19+01:00
A)4(2y-7y2)-3(y2-3y)

8y - 28√2 - 3√2 - 9y

-y - 15√2