Question

Please anyone tell the answers as soon as possible ​

Answer 1

$factorise \\ i)6x(2x - y) + 7y(2x - y) \\ 6x \times 2x - 6x \times y + 7y \times 2x - 7y \times y \\ {12x}^{2} - 6xy + 14xy - {7y}^{2} \\ {12x}^{2} + 8xy - {7y}^{2}$

$ii)2r(y - x) + s(x - y) \\ 2r \times y - 2r \times x + s \times x - s \times y \\ 2ry - 2rx + sx - sy$

$iii)9a(6a - 5b) - {12a}^{2} (6a - 5b) \\ 9a \times 6a - 9a \times 5b - {12a}^{2} \times 6a - {12a}^{2} \times 5b \\ {54a}^{2} - 45ab - {72a}^{3} - {60ab}^{2}$