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4x2-8x-9y2+54x=113

(4x2-8x ) + (-9y2+54y ) =113

4(x2-2x+1) -9(y2-6y+9) =113+4-81 because of distribution

4(x-1)2 - 9(y-3)2 = 36

Divide by 36

(x-1)2 - (y-3)2 =1

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14y ago

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