Question

descompuneti in produs de factori expresia:
E(a,b)=a²b +ab²+2ab+a²+b²+a+b=
Va rog urgent

Answer 1

 $(a^2b+ab^2)+(2ab+a^2+b^2)+(a+b)=\\ =ab(a+b) +(a+b)^2+(a+b)=\\ =(a+b)(ab\;+\;a+b\;+\;1)=\\ =(a+b)[a(b+1)+b+1]=\\ =(a+b)(b+1)(a+1)$