Simplify:Subtract 1+x^2+y^2 from the sum of x^2-y^2 and 1-x^2-y^2 – InterviewSolution

1.

Simplify:Subtract 1+x^2+y^2 from the sum of x^2-y^2 and 1-x^2-y^2

Answer»

sum of(x²-y²) + (1-x²-y²) = 1-2y²

Now subtraction(1-2y²) - ( 1+x²+y²)1-2y² -1 -x² -y²-x²-3y²

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