7m^2+14m-7=0

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Solution for 7m^2+14m-7=0 equation:


Simplifying
7m2 + 14m + -7 = 0

Reorder the terms:
-7 + 14m + 7m2 = 0

Solving
-7 + 14m + 7m2 = 0

Solving for variable 'm'.

Factor out the Greatest Common Factor (GCF), '7'.
7(-1 + 2m + m2) = 0

Ignore the factor 7.

Subproblem 1

Set the factor '(-1 + 2m + m2)' equal to zero and attempt to solve: Simplifying -1 + 2m + m2 = 0 Solving -1 + 2m + m2 = 0 Begin completing the square. Move the constant term to the right: Add '1' to each side of the equation. -1 + 2m + 1 + m2 = 0 + 1 Reorder the terms: -1 + 1 + 2m + m2 = 0 + 1 Combine like terms: -1 + 1 = 0 0 + 2m + m2 = 0 + 1 2m + m2 = 0 + 1 Combine like terms: 0 + 1 = 1 2m + m2 = 1 The m term is 2m. Take half its coefficient (1). Square it (1) and add it to both sides. Add '1' to each side of the equation. 2m + 1 + m2 = 1 + 1 Reorder the terms: 1 + 2m + m2 = 1 + 1 Combine like terms: 1 + 1 = 2 1 + 2m + m2 = 2 Factor a perfect square on the left side: (m + 1)(m + 1) = 2 Calculate the square root of the right side: 1.414213562 Break this problem into two subproblems by setting (m + 1) equal to 1.414213562 and -1.414213562.

Subproblem 1

m + 1 = 1.414213562 Simplifying m + 1 = 1.414213562 Reorder the terms: 1 + m = 1.414213562 Solving 1 + m = 1.414213562 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + m = 1.414213562 + -1 Combine like terms: 1 + -1 = 0 0 + m = 1.414213562 + -1 m = 1.414213562 + -1 Combine like terms: 1.414213562 + -1 = 0.414213562 m = 0.414213562 Simplifying m = 0.414213562

Subproblem 2

m + 1 = -1.414213562 Simplifying m + 1 = -1.414213562 Reorder the terms: 1 + m = -1.414213562 Solving 1 + m = -1.414213562 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + m = -1.414213562 + -1 Combine like terms: 1 + -1 = 0 0 + m = -1.414213562 + -1 m = -1.414213562 + -1 Combine like terms: -1.414213562 + -1 = -2.414213562 m = -2.414213562 Simplifying m = -2.414213562

Solution

The solution to the problem is based on the solutions from the subproblems. m = {0.414213562, -2.414213562}

Solution

m = {0.414213562, -2.414213562}

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