Question

(x+2y)^2-4(2x-y)^2 please solve ​

Answer 1

$( {x + 2y})^{2} - 4 ({2x - y})^{2} \\ ({x}^{2} + {4y}^{2} + 4xy) - 4( {4x}^{2} + {y}^{2} - 4xy) \\ {x}^{2} + {4y}^{2} + 4xy - {16x}^{2} - 4 {y}^{2} + 16xy \\ - 15 {x}^{2} + 20xy \\ - 5x(3x - 4y).$

hopefully its helped u dear :)