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Simplifying 9x2 + 24x + 64 = 0 Reorder the terms: 64 + 24x + 9x2 = 0 Solving 64 + 24x + 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 + 2.666666667x + x2 = 0 Move the constant term to the right: Add '-7.111111111' to each side of the equation. 7.111111111 + 2.666666667x + -7.111111111 + x2 = 0 + -7.111111111 Reorder the terms: 7.111111111 + -7.111111111 + 2.666666667x + x2 = 0 + -7.111111111 Combine like terms: 7.111111111 + -7.111111111 = 0.000000000 0.000000000 + 2.666666667x + x2 = 0 + -7.111111111 2.666666667x + x2 = 0 + -7.111111111 Combine like terms: 0 + -7.111111111 = -7.111111111 2.666666667x + x2 = -7.111111111 The x term is 2.666666667x. Take half its coefficient (1.333333334). Square it (1.777777780) and add it to both sides. Add '1.777777780' to each side of the equation. 2.666666667x + 1.777777780 + x2 = -7.111111111 + 1.777777780 Reorder the terms: 1.777777780 + 2.666666667x + x2 = -7.111111111 + 1.777777780 Combine like terms: -7.111111111 + 1.777777780 = -5.333333331 1.777777780 + 2.666666667x + x2 = -5.333333331 Factor a perfect square on the left side: (x + 1.333333334)(x + 1.333333334) = -5.333333331 Can't calculate square root of the right side. The solution to this equation could not be determined.
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