Question 70 From the sum of x2−y2−1,y2−x2−1 and 1−x2−y2, s

1.	Question 70 From the sum of x2−y2−1,y2−x2−1 and 1−x2−y2, subtract −(1+y2).
Answer» Question 70 From the sum of $x^{2} - y^{2} - 1, y^{2} - x^{2} - 1$ and $1 - x^{2} - y^{2}$ , subtract $- (1 + y^{2}) .$

Question 70 From the sum of x2−y2−1,y2−x2−1 and 1−x2−y2, subtract −(1+y2).

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Question 70

From the sum of $x^{2} - y^{2} - 1, y^{2} - x^{2} - 1$ and $1 - x^{2} - y^{2}$ , subtract $- (1 + y^{2}) .$

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Question 70 From the sum of x2−y2−1,y2−x2−1 and 1−x2−y2, subtract −(1+y2).

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