A math problem of merging similar items! 2(a2b+ab2)-2(a2b-1)-2ab2-2 Requirement: write down the process and the result (the number without a sign after the letter is the square)

A math problem of merging similar items! 2(a2b+ab2)-2(a2b-1)-2ab2-2 Requirement: write down the process and the result (the number without a sign after the letter is the square)

2a^2+2ab^2-2a^2b+2-2ab^2-2
=0