3ab+2b при a= -1 b= 1

Question

3ab+2b при a= -1 b= 1

Answer 1

3* (-1) * 1 + 2 * 2 = (-3) *1 +1 =(-3)+4= -1

Answer 2

3ab+2b=3*(-1)*1+2*1=-3*1+2=-3+2=-1