How to solve x²+1-2x+y²+9-2y=x²+y²+4-4y
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How to solve x²+1-2x+y²+9-2y=x²+y²+4-4y
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Step-by-step explanation:
x
2
+1−2x+y
2
+9−2y=x
2
+y
2
+4−4y
−2x+10−2y=4−4y
−2x−2y=4−10
−2x−2y=−6
2(x+y)=6
x+y=3
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