Question

6. Simplify: (0.5x -0.4y)^2 - (0.5x -0.4y)^2​

Answer 1

$(0.5x -0.4y)^2 - (0.5x -0.4y)^2$

$0.25 {x}^{2} + 0.16 {y}^{2} - 0.4xy - (0.25 {x}^{2} + 0.16 {y}^{2} - 0.4xy)$

$0.25 {x}^{2} + 0.16 {y}^{2} - 0.4xy -0.25 {x}^{2} - 0.16 {y}^{2} + 0.4xy)$

Answer = 0

All are having different signs so they will cut So, the answer will be 0