Add: x²-y²-1 , y²-1-x , 1-x²-y²
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9
x^2-y^2-1+y^2-1-x+1-x^2-y^2
=-y^2-1-x
this is thr answer
=-y^2-1-x
this is thr answer
naadi2006:
how did u do that
Answered by
3
x^2-y^2-1+y^2-1-x+1-x^2-y^2
=-y^2-1-x
hope it helps you
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