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Complete the square to rewrite the following explanation x^2 + 4x + y^2 - 6y = -4

 Apr 16, 2020
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x^2 + 4x             +   y^2 -6y            = -4

x^2 + 4x + 4     +     y^2 -6y+9      = -4 +4 + 9

(x+2)^2            +     (y-3)^2           = 9

 Apr 16, 2020

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