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Simplifying (x2 + 3x + 2) + (x2 + 8x + 15) + (2x2 + x + -3) = 0 Reorder the terms: (2 + 3x + x2) + (x2 + 8x + 15) + (2x2 + x + -3) = 0 Remove parenthesis around (2 + 3x + x2) 2 + 3x + x2 + (x2 + 8x + 15) + (2x2 + x + -3) = 0 Reorder the terms: 2 + 3x + x2 + (15 + 8x + x2) + (2x2 + x + -3) = 0 Remove parenthesis around (15 + 8x + x2) 2 + 3x + x2 + 15 + 8x + x2 + (2x2 + x + -3) = 0 Reorder the terms: 2 + 3x + x2 + 15 + 8x + x2 + (-3 + x + 2x2) = 0 Remove parenthesis around (-3 + x + 2x2) 2 + 3x + x2 + 15 + 8x + x2 + -3 + x + 2x2 = 0 Reorder the terms: 2 + 15 + -3 + 3x + 8x + x + x2 + x2 + 2x2 = 0 Combine like terms: 2 + 15 = 17 17 + -3 + 3x + 8x + x + x2 + x2 + 2x2 = 0 Combine like terms: 17 + -3 = 14 14 + 3x + 8x + x + x2 + x2 + 2x2 = 0 Combine like terms: 3x + 8x = 11x 14 + 11x + x + x2 + x2 + 2x2 = 0 Combine like terms: 11x + x = 12x 14 + 12x + x2 + x2 + 2x2 = 0 Combine like terms: x2 + x2 = 2x2 14 + 12x + 2x2 + 2x2 = 0 Combine like terms: 2x2 + 2x2 = 4x2 14 + 12x + 4x2 = 0 Solving 14 + 12x + 4x2 = 0 Solving for variable 'x'. Factor out the Greatest Common Factor (GCF), '2'. 2(7 + 6x + 2x2) = 0 Ignore the factor 2.Subproblem 1
Set the factor '(7 + 6x + 2x2)' equal to zero and attempt to solve: Simplifying 7 + 6x + 2x2 = 0 Solving 7 + 6x + 2x2 = 0 Begin completing the square. Divide all terms by 2 the coefficient of the squared term: Divide each side by '2'. 3.5 + 3x + x2 = 0 Move the constant term to the right: Add '-3.5' to each side of the equation. 3.5 + 3x + -3.5 + x2 = 0 + -3.5 Reorder the terms: 3.5 + -3.5 + 3x + x2 = 0 + -3.5 Combine like terms: 3.5 + -3.5 = 0.0 0.0 + 3x + x2 = 0 + -3.5 3x + x2 = 0 + -3.5 Combine like terms: 0 + -3.5 = -3.5 3x + x2 = -3.5 The x term is 3x. Take half its coefficient (1.5). Square it (2.25) and add it to both sides. Add '2.25' to each side of the equation. 3x + 2.25 + x2 = -3.5 + 2.25 Reorder the terms: 2.25 + 3x + x2 = -3.5 + 2.25 Combine like terms: -3.5 + 2.25 = -1.25 2.25 + 3x + x2 = -1.25 Factor a perfect square on the left side: (x + 1.5)(x + 1.5) = -1.25 Can't calculate square root of the right side. The solution to this equation could not be determined. This subproblem is being ignored because a solution could not be determined. The solution to this equation could not be determined.
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