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12-09-2022
Mathematics

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What is the standard form of the equation of the conic given by 2 x²+2 y²+4 x-12 y-22=0 ?
a. (x+1)² / 21 - (y-3)² /21=1 b. (x+1)² /21 + (y-3)² /21=1 c. (x-3)² /21 + (y+1)² /21=1 d. (x-1)²/7 + (y+3)²/3=1

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