2m^2+7m=6

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


Simplifying
2m2 + 7m = 6

Reorder the terms:
7m + 2m2 = 6

Solving
7m + 2m2 = 6

Solving for variable 'm'.

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

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

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

Divide each side by '2'.
-3 + 3.5m + m2 = 0

Move the constant term to the right:

Add '3' to each side of the equation.
-3 + 3.5m + 3 + m2 = 0 + 3

Reorder the terms:
-3 + 3 + 3.5m + m2 = 0 + 3

Combine like terms: -3 + 3 = 0
0 + 3.5m + m2 = 0 + 3
3.5m + m2 = 0 + 3

Combine like terms: 0 + 3 = 3
3.5m + m2 = 3

The m term is 3.5m.  Take half its coefficient (1.75).
Square it (3.0625) and add it to both sides.

Add '3.0625' to each side of the equation.
3.5m + 3.0625 + m2 = 3 + 3.0625

Reorder the terms:
3.0625 + 3.5m + m2 = 3 + 3.0625

Combine like terms: 3 + 3.0625 = 6.0625
3.0625 + 3.5m + m2 = 6.0625

Factor a perfect square on the left side:
(m + 1.75)(m + 1.75) = 6.0625

Calculate the square root of the right side: 2.46221445

Break this problem into two subproblems by setting 
(m + 1.75) equal to 2.46221445 and -2.46221445.

Subproblem 1

m + 1.75 = 2.46221445 Simplifying m + 1.75 = 2.46221445 Reorder the terms: 1.75 + m = 2.46221445 Solving 1.75 + m = 2.46221445 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '-1.75' to each side of the equation. 1.75 + -1.75 + m = 2.46221445 + -1.75 Combine like terms: 1.75 + -1.75 = 0.00 0.00 + m = 2.46221445 + -1.75 m = 2.46221445 + -1.75 Combine like terms: 2.46221445 + -1.75 = 0.71221445 m = 0.71221445 Simplifying m = 0.71221445

Subproblem 2

m + 1.75 = -2.46221445 Simplifying m + 1.75 = -2.46221445 Reorder the terms: 1.75 + m = -2.46221445 Solving 1.75 + m = -2.46221445 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '-1.75' to each side of the equation. 1.75 + -1.75 + m = -2.46221445 + -1.75 Combine like terms: 1.75 + -1.75 = 0.00 0.00 + m = -2.46221445 + -1.75 m = -2.46221445 + -1.75 Combine like terms: -2.46221445 + -1.75 = -4.21221445 m = -4.21221445 Simplifying m = -4.21221445

Solution

The solution to the problem is based on the solutions from the subproblems. m = {0.71221445, -4.21221445}

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