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Simplifying 9X2 + 47X + 64 = 0 Reorder the terms: 64 + 47X + 9X2 = 0 Solving 64 + 47X + 9X2 = 0 Solving for variable 'X'. Begin completing the square. Divide all terms by 9 the coefficient of the squared term: Divide each side by '9'. 7.111111111 + 5.222222222X + X2 = 0 Move the constant term to the right: Add '-7.111111111' to each side of the equation. 7.111111111 + 5.222222222X + -7.111111111 + X2 = 0 + -7.111111111 Reorder the terms: 7.111111111 + -7.111111111 + 5.222222222X + X2 = 0 + -7.111111111 Combine like terms: 7.111111111 + -7.111111111 = 0.000000000 0.000000000 + 5.222222222X + X2 = 0 + -7.111111111 5.222222222X + X2 = 0 + -7.111111111 Combine like terms: 0 + -7.111111111 = -7.111111111 5.222222222X + X2 = -7.111111111 The X term is 5.222222222X. Take half its coefficient (2.611111111). Square it (6.817901234) and add it to both sides. Add '6.817901234' to each side of the equation. 5.222222222X + 6.817901234 + X2 = -7.111111111 + 6.817901234 Reorder the terms: 6.817901234 + 5.222222222X + X2 = -7.111111111 + 6.817901234 Combine like terms: -7.111111111 + 6.817901234 = -0.293209877 6.817901234 + 5.222222222X + X2 = -0.293209877 Factor a perfect square on the left side: (X + 2.611111111)(X + 2.611111111) = -0.293209877 Can't calculate square root of the right side. The solution to this equation could not be determined.
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