Question

7. Which of the following is obtained by subtracting x²-y² from y²-,x²?​

Answer 1

Answer:

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

Step-by-step explanation:

$x^2-y^2-(y^2-x^2) = x^2-y^2-y^2+x^2$

                               =$2x^2-2y^2$

                               =$2(x^2-y^2)$

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