Math, asked by roshini12223, 4 months ago

simplify (x^2+y^2+1)+(x^2+y^2-1)+(x^2-y^2+1)+(y^2+1-'x^2)

Answers

Answered by sindhupaila2007

0

Step-by-step explanation:

the answer is

2(x^2+y^2+1)

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