First simplify, then evaluate: 2 (a squared b-ab) - 3 (a squared b-two thirds AB) Where a and B satisfy | a + √ 3 | + √ B-2 {radical (b-2)} = 0

First simplify, then evaluate: 2 (a squared b-ab) - 3 (a squared b-two thirds AB) Where a and B satisfy | a + √ 3 | + √ B-2 {radical (b-2)} = 0