Question

please solve it
subject : mathematics​

Answer 1

Answer:

$2( {y}^{2} - {x}^{2} ) = - 2( {x}^{2} - {y}^{2} ) .$

OPTION A IS CORRECT

Step-by-step explanation:

ANSWER IS

$( {y}^{2} - {x}^{2} )- ( {x}^{2} - {y}^{2} ) = {y}^{2} - {x}^{2} - {x}^{2} + {y}^{2} \\ \\ = 2 {y}^{2} - 2 {x}^{2} \\ \\ = 2( {y}^{2} - {x}^{2} ) = - 2( {x}^{2} - {y)}^{2} .$