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Simplifying 3x + -3(x + -3) = 2x + -1 * 2x(2x + -1) Reorder the terms: 3x + -3(-3 + x) = 2x + -1 * 2x(2x + -1) 3x + (-3 * -3 + x * -3) = 2x + -1 * 2x(2x + -1) 3x + (9 + -3x) = 2x + -1 * 2x(2x + -1) Reorder the terms: 9 + 3x + -3x = 2x + -1 * 2x(2x + -1) Combine like terms: 3x + -3x = 0 9 + 0 = 2x + -1 * 2x(2x + -1) 9 = 2x + -1 * 2x(2x + -1) Reorder the terms: 9 = 2x + -1 * 2x(-1 + 2x) Multiply -1 * 2 9 = 2x + -2x(-1 + 2x) 9 = 2x + (-1 * -2x + 2x * -2x) 9 = 2x + (2x + -4x2) Combine like terms: 2x + 2x = 4x 9 = 4x + -4x2 Solving 9 = 4x + -4x2 Solving for variable 'x'. Reorder the terms: 9 + -4x + 4x2 = 4x + -4x + -4x2 + 4x2 Combine like terms: 4x + -4x = 0 9 + -4x + 4x2 = 0 + -4x2 + 4x2 9 + -4x + 4x2 = -4x2 + 4x2 Combine like terms: -4x2 + 4x2 = 0 9 + -4x + 4x2 = 0 Begin completing the square. Divide all terms by 4 the coefficient of the squared term: Divide each side by '4'. 2.25 + -1x + x2 = 0 Move the constant term to the right: Add '-2.25' to each side of the equation. 2.25 + -1x + -2.25 + x2 = 0 + -2.25 Reorder the terms: 2.25 + -2.25 + -1x + x2 = 0 + -2.25 Combine like terms: 2.25 + -2.25 = 0.00 0.00 + -1x + x2 = 0 + -2.25 -1x + x2 = 0 + -2.25 Combine like terms: 0 + -2.25 = -2.25 -1x + x2 = -2.25 The x term is -1x. 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. -1x + 0.25 + x2 = -2.25 + 0.25 Reorder the terms: 0.25 + -1x + x2 = -2.25 + 0.25 Combine like terms: -2.25 + 0.25 = -2 0.25 + -1x + x2 = -2 Factor a perfect square on the left side: (x + -0.5)(x + -0.5) = -2 Can't calculate square root of the right side. The solution to this equation could not be determined.
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