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Simplifying 3x2 + 3x = -7 Reorder the terms: 3x + 3x2 = -7 Solving 3x + 3x2 = -7 Solving for variable 'x'. Reorder the terms: 7 + 3x + 3x2 = -7 + 7 Combine like terms: -7 + 7 = 0 7 + 3x + 3x2 = 0 Begin completing the square. Divide all terms by 3 the coefficient of the squared term: Divide each side by '3'. 2.333333333 + x + x2 = 0 Move the constant term to the right: Add '-2.333333333' to each side of the equation. 2.333333333 + x + -2.333333333 + x2 = 0 + -2.333333333 Reorder the terms: 2.333333333 + -2.333333333 + x + x2 = 0 + -2.333333333 Combine like terms: 2.333333333 + -2.333333333 = 0.000000000 0.000000000 + x + x2 = 0 + -2.333333333 x + x2 = 0 + -2.333333333 Combine like terms: 0 + -2.333333333 = -2.333333333 x + x2 = -2.333333333 The x term is x. Take half its coefficient (0.5). Square it (0.25) and add it to both sides. Add '0.25' to each side of the equation. + 0.25 + x2 = -2.333333333 + 0.25 Combine like terms: + 0.25 = 1.25 1.25 + x2 = -2.333333333 + 0.25 Combine like terms: -2.333333333 + 0.25 = -2.083333333 1.25 + x2 = -2.083333333 Factor a perfect square on the left side: (x + 0.5)(x + 0.5) = -2.083333333 Can't calculate square root of the right side. The solution to this equation could not be determined.
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