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Simplifying 3x * 3x + -2x + 7 = 0 Reorder the terms for easier multiplication: 3 * 3x * x + -2x + 7 = 0 Multiply 3 * 3 9x * x + -2x + 7 = 0 Multiply x * x 9x2 + -2x + 7 = 0 Reorder the terms: 7 + -2x + 9x2 = 0 Solving 7 + -2x + 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'. 0.7777777778 + -0.2222222222x + x2 = 0 Move the constant term to the right: Add '-0.7777777778' to each side of the equation. 0.7777777778 + -0.2222222222x + -0.7777777778 + x2 = 0 + -0.7777777778 Reorder the terms: 0.7777777778 + -0.7777777778 + -0.2222222222x + x2 = 0 + -0.7777777778 Combine like terms: 0.7777777778 + -0.7777777778 = 0.0000000000 0.0000000000 + -0.2222222222x + x2 = 0 + -0.7777777778 -0.2222222222x + x2 = 0 + -0.7777777778 Combine like terms: 0 + -0.7777777778 = -0.7777777778 -0.2222222222x + x2 = -0.7777777778 The x term is -0.2222222222x. Take half its coefficient (-0.1111111111). Square it (0.01234567901) and add it to both sides. Add '0.01234567901' to each side of the equation. -0.2222222222x + 0.01234567901 + x2 = -0.7777777778 + 0.01234567901 Reorder the terms: 0.01234567901 + -0.2222222222x + x2 = -0.7777777778 + 0.01234567901 Combine like terms: -0.7777777778 + 0.01234567901 = -0.76543209879 0.01234567901 + -0.2222222222x + x2 = -0.76543209879 Factor a perfect square on the left side: (x + -0.1111111111)(x + -0.1111111111) = -0.76543209879 Can't calculate square root of the right side. The solution to this equation could not be determined.
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