7m^2+5m-3=0

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Solution for 7m^2+5m-3=0 equation:


Simplifying
7m2 + 5m + -3 = 0

Reorder the terms:
-3 + 5m + 7m2 = 0

Solving
-3 + 5m + 7m2 = 0

Solving for variable 'm'.

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

Divide each side by '7'.
-0.4285714286 + 0.7142857143m + m2 = 0

Move the constant term to the right:

Add '0.4285714286' to each side of the equation.
-0.4285714286 + 0.7142857143m + 0.4285714286 + m2 = 0 + 0.4285714286

Reorder the terms:
-0.4285714286 + 0.4285714286 + 0.7142857143m + m2 = 0 + 0.4285714286

Combine like terms: -0.4285714286 + 0.4285714286 = 0.0000000000
0.0000000000 + 0.7142857143m + m2 = 0 + 0.4285714286
0.7142857143m + m2 = 0 + 0.4285714286

Combine like terms: 0 + 0.4285714286 = 0.4285714286
0.7142857143m + m2 = 0.4285714286

The m term is 0.7142857143m.  Take half its coefficient (0.3571428572).
Square it (0.1275510204) and add it to both sides.

Add '0.1275510204' to each side of the equation.
0.7142857143m + 0.1275510204 + m2 = 0.4285714286 + 0.1275510204

Reorder the terms:
0.1275510204 + 0.7142857143m + m2 = 0.4285714286 + 0.1275510204

Combine like terms: 0.4285714286 + 0.1275510204 = 0.556122449
0.1275510204 + 0.7142857143m + m2 = 0.556122449

Factor a perfect square on the left side:
(m + 0.3571428572)(m + 0.3571428572) = 0.556122449

Calculate the square root of the right side: 0.745736179

Break this problem into two subproblems by setting 
(m + 0.3571428572) equal to 0.745736179 and -0.745736179.

Subproblem 1

m + 0.3571428572 = 0.745736179 Simplifying m + 0.3571428572 = 0.745736179 Reorder the terms: 0.3571428572 + m = 0.745736179 Solving 0.3571428572 + m = 0.745736179 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '-0.3571428572' to each side of the equation. 0.3571428572 + -0.3571428572 + m = 0.745736179 + -0.3571428572 Combine like terms: 0.3571428572 + -0.3571428572 = 0.0000000000 0.0000000000 + m = 0.745736179 + -0.3571428572 m = 0.745736179 + -0.3571428572 Combine like terms: 0.745736179 + -0.3571428572 = 0.3885933218 m = 0.3885933218 Simplifying m = 0.3885933218

Subproblem 2

m + 0.3571428572 = -0.745736179 Simplifying m + 0.3571428572 = -0.745736179 Reorder the terms: 0.3571428572 + m = -0.745736179 Solving 0.3571428572 + m = -0.745736179 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '-0.3571428572' to each side of the equation. 0.3571428572 + -0.3571428572 + m = -0.745736179 + -0.3571428572 Combine like terms: 0.3571428572 + -0.3571428572 = 0.0000000000 0.0000000000 + m = -0.745736179 + -0.3571428572 m = -0.745736179 + -0.3571428572 Combine like terms: -0.745736179 + -0.3571428572 = -1.1028790362 m = -1.1028790362 Simplifying m = -1.1028790362

Solution

The solution to the problem is based on the solutions from the subproblems. m = {0.3885933218, -1.1028790362}

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