7m^2+2m=6

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Solution for 7m^2+2m=6 equation:


Simplifying
7m2 + 2m = 6

Reorder the terms:
2m + 7m2 = 6

Solving
2m + 7m2 = 6

Solving for variable 'm'.

Reorder the terms:
-6 + 2m + 7m2 = 6 + -6

Combine like terms: 6 + -6 = 0
-6 + 2m + 7m2 = 0

Begin completing the square.  Divide all terms by
7 the coefficient of the squared term: 

Divide each side by '7'.
-0.8571428571 + 0.2857142857m + m2 = 0

Move the constant term to the right:

Add '0.8571428571' to each side of the equation.
-0.8571428571 + 0.2857142857m + 0.8571428571 + m2 = 0 + 0.8571428571

Reorder the terms:
-0.8571428571 + 0.8571428571 + 0.2857142857m + m2 = 0 + 0.8571428571

Combine like terms: -0.8571428571 + 0.8571428571 = 0.0000000000
0.0000000000 + 0.2857142857m + m2 = 0 + 0.8571428571
0.2857142857m + m2 = 0 + 0.8571428571

Combine like terms: 0 + 0.8571428571 = 0.8571428571
0.2857142857m + m2 = 0.8571428571

The m term is 0.2857142857m.  Take half its coefficient (0.1428571429).
Square it (0.02040816328) and add it to both sides.

Add '0.02040816328' to each side of the equation.
0.2857142857m + 0.02040816328 + m2 = 0.8571428571 + 0.02040816328

Reorder the terms:
0.02040816328 + 0.2857142857m + m2 = 0.8571428571 + 0.02040816328

Combine like terms: 0.8571428571 + 0.02040816328 = 0.87755102038
0.02040816328 + 0.2857142857m + m2 = 0.87755102038

Factor a perfect square on the left side:
(m + 0.1428571429)(m + 0.1428571429) = 0.87755102038

Calculate the square root of the right side: 0.936776932

Break this problem into two subproblems by setting 
(m + 0.1428571429) equal to 0.936776932 and -0.936776932.

Subproblem 1

m + 0.1428571429 = 0.936776932 Simplifying m + 0.1428571429 = 0.936776932 Reorder the terms: 0.1428571429 + m = 0.936776932 Solving 0.1428571429 + m = 0.936776932 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '-0.1428571429' to each side of the equation. 0.1428571429 + -0.1428571429 + m = 0.936776932 + -0.1428571429 Combine like terms: 0.1428571429 + -0.1428571429 = 0.0000000000 0.0000000000 + m = 0.936776932 + -0.1428571429 m = 0.936776932 + -0.1428571429 Combine like terms: 0.936776932 + -0.1428571429 = 0.7939197891 m = 0.7939197891 Simplifying m = 0.7939197891

Subproblem 2

m + 0.1428571429 = -0.936776932 Simplifying m + 0.1428571429 = -0.936776932 Reorder the terms: 0.1428571429 + m = -0.936776932 Solving 0.1428571429 + m = -0.936776932 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '-0.1428571429' to each side of the equation. 0.1428571429 + -0.1428571429 + m = -0.936776932 + -0.1428571429 Combine like terms: 0.1428571429 + -0.1428571429 = 0.0000000000 0.0000000000 + m = -0.936776932 + -0.1428571429 m = -0.936776932 + -0.1428571429 Combine like terms: -0.936776932 + -0.1428571429 = -1.0796340749 m = -1.0796340749 Simplifying m = -1.0796340749

Solution

The solution to the problem is based on the solutions from the subproblems. m = {0.7939197891, -1.0796340749}

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