5ab-9 / 2A square + 1, 2A square B-11 / 4ab-a square B-5, where a = 1b = - 2

5ab-9 / 2A square + 1, 2A square B-11 / 4ab-a square B-5, where a = 1b = - 2

5ab-9 / 2A squared + 1, = 5 × 1 × (- 2) / (2 × 1 & # 178; + 1) = - 10 / 3; 2A squared B-11 / 4ab-a squared B-5 = (2 × 1 & # 178; × (- 2) - 11) / (4 × 1 × (- 2) - 1 × (- 2) - 5) = - 15 / - 11 = 15 / 11; where a = 1b = - 2, I'm glad to answer for you, skyhunter 002 will answer for you