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Simplifying 2m2 + 8m + 42 = 0 Reorder the terms: 42 + 8m + 2m2 = 0 Solving 42 + 8m + 2m2 = 0 Solving for variable 'm'. Factor out the Greatest Common Factor (GCF), '2'. 2(21 + 4m + m2) = 0 Ignore the factor 2.Subproblem 1
Set the factor '(21 + 4m + m2)' equal to zero and attempt to solve: Simplifying 21 + 4m + m2 = 0 Solving 21 + 4m + m2 = 0 Begin completing the square. Move the constant term to the right: Add '-21' to each side of the equation. 21 + 4m + -21 + m2 = 0 + -21 Reorder the terms: 21 + -21 + 4m + m2 = 0 + -21 Combine like terms: 21 + -21 = 0 0 + 4m + m2 = 0 + -21 4m + m2 = 0 + -21 Combine like terms: 0 + -21 = -21 4m + m2 = -21 The m term is 4m. Take half its coefficient (2). Square it (4) and add it to both sides. Add '4' to each side of the equation. 4m + 4 + m2 = -21 + 4 Reorder the terms: 4 + 4m + m2 = -21 + 4 Combine like terms: -21 + 4 = -17 4 + 4m + m2 = -17 Factor a perfect square on the left side: (m + 2)(m + 2) = -17 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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