2*a*b+3*b*a-a*b= *********

Question

2*a*b+3*b*a-a*b= *********

Answer 1

2*a*b+3*b*a-a*b= 2аb+3ab-ab= 5ab-ab=4ab

Answer 2

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