3ab (2ab + 2a - b) - 2a (2ab - 2b + a)

a • (6ab2 + 2ab - 2a - 3b2 + 4b)

Step by step solution : Step 1:

Equation at the end of step 1 : (3ab • (2ab + 2a - b)) - 2a • (2ab + a - 2b) Step 2 : Equation at the end of step 2 : 3ab • (2ab + 2a - b) - 2a • (2ab + a - 2b) Step 3 : Step 4 : Pulling out like terms:

4.1 Pull out like factors:

6a2b2 + 2a2b - 2a2 - 3ab2 + 4ab =

a • (6ab2 + 2ab - 2a - 3b2 + 4b)

Final result : a • (6ab2 + 2ab - 2a - 3b2 + 4b)