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Simplifying (2x2 + -1x + 7) + -1(x + -1) = 0 Reorder the terms: (7 + -1x + 2x2) + -1(x + -1) = 0 Remove parenthesis around (7 + -1x + 2x2) 7 + -1x + 2x2 + -1(x + -1) = 0 Reorder the terms: 7 + -1x + 2x2 + -1(-1 + x) = 0 7 + -1x + 2x2 + (-1 * -1 + x * -1) = 0 7 + -1x + 2x2 + (1 + -1x) = 0 Reorder the terms: 7 + 1 + -1x + -1x + 2x2 = 0 Combine like terms: 7 + 1 = 8 8 + -1x + -1x + 2x2 = 0 Combine like terms: -1x + -1x = -2x 8 + -2x + 2x2 = 0 Solving 8 + -2x + 2x2 = 0 Solving for variable 'x'. Factor out the Greatest Common Factor (GCF), '2'. 2(4 + -1x + x2) = 0 Ignore the factor 2.Subproblem 1
Set the factor '(4 + -1x + x2)' equal to zero and attempt to solve: Simplifying 4 + -1x + x2 = 0 Solving 4 + -1x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '-4' to each side of the equation. 4 + -1x + -4 + x2 = 0 + -4 Reorder the terms: 4 + -4 + -1x + x2 = 0 + -4 Combine like terms: 4 + -4 = 0 0 + -1x + x2 = 0 + -4 -1x + x2 = 0 + -4 Combine like terms: 0 + -4 = -4 -1x + x2 = -4 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 = -4 + 0.25 Reorder the terms: 0.25 + -1x + x2 = -4 + 0.25 Combine like terms: -4 + 0.25 = -3.75 0.25 + -1x + x2 = -3.75 Factor a perfect square on the left side: (x + -0.5)(x + -0.5) = -3.75 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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