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Simplifying 2x2 + 28x + 100 = 0 Reorder the terms: 100 + 28x + 2x2 = 0 Solving 100 + 28x + 2x2 = 0 Solving for variable 'x'. Factor out the Greatest Common Factor (GCF), '2'. 2(50 + 14x + x2) = 0 Ignore the factor 2.Subproblem 1
Set the factor '(50 + 14x + x2)' equal to zero and attempt to solve: Simplifying 50 + 14x + x2 = 0 Solving 50 + 14x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '-50' to each side of the equation. 50 + 14x + -50 + x2 = 0 + -50 Reorder the terms: 50 + -50 + 14x + x2 = 0 + -50 Combine like terms: 50 + -50 = 0 0 + 14x + x2 = 0 + -50 14x + x2 = 0 + -50 Combine like terms: 0 + -50 = -50 14x + x2 = -50 The x term is 14x. Take half its coefficient (7). Square it (49) and add it to both sides. Add '49' to each side of the equation. 14x + 49 + x2 = -50 + 49 Reorder the terms: 49 + 14x + x2 = -50 + 49 Combine like terms: -50 + 49 = -1 49 + 14x + x2 = -1 Factor a perfect square on the left side: (x + 7)(x + 7) = -1 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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