Question

2ab-b+3ab² при a= 2,3 и b= -2,5

Answer 1

2ab-b+3ab²=b(2a-1+3ab)=-2.5(2*2.3-1+3*2.3*(-2.5))=-2.5*(4.6-1-17.25)=
=-2.5*(-13.65)=34.125