Question

please answer anything as possible

Answer 1

$question \: 17. \\ 3x + 2y = 12 \: \: \: \: \: \: and \: \: xy = 6 \\ 9 {x}^{2} + 4 {y}^{2} = {(3x + 2y)}^{2} - 12xy \\ = {12}^{2} - 12 \times 6 = 72$