7m^2+2m=10

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Solution for 7m^2+2m=10 equation:


Simplifying
7m2 + 2m = 10

Reorder the terms:
2m + 7m2 = 10

Solving
2m + 7m2 = 10

Solving for variable 'm'.

Reorder the terms:
-10 + 2m + 7m2 = 10 + -10

Combine like terms: 10 + -10 = 0
-10 + 2m + 7m2 = 0

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

Divide each side by '7'.
-1.428571429 + 0.2857142857m + m2 = 0

Move the constant term to the right:

Add '1.428571429' to each side of the equation.
-1.428571429 + 0.2857142857m + 1.428571429 + m2 = 0 + 1.428571429

Reorder the terms:
-1.428571429 + 1.428571429 + 0.2857142857m + m2 = 0 + 1.428571429

Combine like terms: -1.428571429 + 1.428571429 = 0.000000000
0.000000000 + 0.2857142857m + m2 = 0 + 1.428571429
0.2857142857m + m2 = 0 + 1.428571429

Combine like terms: 0 + 1.428571429 = 1.428571429
0.2857142857m + m2 = 1.428571429

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 = 1.428571429 + 0.02040816328

Reorder the terms:
0.02040816328 + 0.2857142857m + m2 = 1.428571429 + 0.02040816328

Combine like terms: 1.428571429 + 0.02040816328 = 1.44897959228
0.02040816328 + 0.2857142857m + m2 = 1.44897959228

Factor a perfect square on the left side:
(m + 0.1428571429)(m + 0.1428571429) = 1.44897959228

Calculate the square root of the right side: 1.203735682

Break this problem into two subproblems by setting 
(m + 0.1428571429) equal to 1.203735682 and -1.203735682.

Subproblem 1

m + 0.1428571429 = 1.203735682 Simplifying m + 0.1428571429 = 1.203735682 Reorder the terms: 0.1428571429 + m = 1.203735682 Solving 0.1428571429 + m = 1.203735682 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 = 1.203735682 + -0.1428571429 Combine like terms: 0.1428571429 + -0.1428571429 = 0.0000000000 0.0000000000 + m = 1.203735682 + -0.1428571429 m = 1.203735682 + -0.1428571429 Combine like terms: 1.203735682 + -0.1428571429 = 1.0608785391 m = 1.0608785391 Simplifying m = 1.0608785391

Subproblem 2

m + 0.1428571429 = -1.203735682 Simplifying m + 0.1428571429 = -1.203735682 Reorder the terms: 0.1428571429 + m = -1.203735682 Solving 0.1428571429 + m = -1.203735682 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 = -1.203735682 + -0.1428571429 Combine like terms: 0.1428571429 + -0.1428571429 = 0.0000000000 0.0000000000 + m = -1.203735682 + -0.1428571429 m = -1.203735682 + -0.1428571429 Combine like terms: -1.203735682 + -0.1428571429 = -1.3465928249 m = -1.3465928249 Simplifying m = -1.3465928249

Solution

The solution to the problem is based on the solutions from the subproblems. m = {1.0608785391, -1.3465928249}

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