what is obtained by subtracting x2-y2 from y2-x2
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Answer:
2x^2
Step-by-step explanation:
x^2-y^2 - y^2-x^2
= (x^2-y^2) - (y^2-x^2)
= x^2-y^2 - y^2+x^2
=2x^2
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