2m^2+11m-14=0

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Solution for 2m^2+11m-14=0 equation:


Simplifying
2m2 + 11m + -14 = 0

Reorder the terms:
-14 + 11m + 2m2 = 0

Solving
-14 + 11m + 2m2 = 0

Solving for variable 'm'.

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

Divide each side by '2'.
-7 + 5.5m + m2 = 0

Move the constant term to the right:

Add '7' to each side of the equation.
-7 + 5.5m + 7 + m2 = 0 + 7

Reorder the terms:
-7 + 7 + 5.5m + m2 = 0 + 7

Combine like terms: -7 + 7 = 0
0 + 5.5m + m2 = 0 + 7
5.5m + m2 = 0 + 7

Combine like terms: 0 + 7 = 7
5.5m + m2 = 7

The m term is 5.5m.  Take half its coefficient (2.75).
Square it (7.5625) and add it to both sides.

Add '7.5625' to each side of the equation.
5.5m + 7.5625 + m2 = 7 + 7.5625

Reorder the terms:
7.5625 + 5.5m + m2 = 7 + 7.5625

Combine like terms: 7 + 7.5625 = 14.5625
7.5625 + 5.5m + m2 = 14.5625

Factor a perfect square on the left side:
(m + 2.75)(m + 2.75) = 14.5625

Calculate the square root of the right side: 3.816084381

Break this problem into two subproblems by setting 
(m + 2.75) equal to 3.816084381 and -3.816084381.

Subproblem 1

m + 2.75 = 3.816084381 Simplifying m + 2.75 = 3.816084381 Reorder the terms: 2.75 + m = 3.816084381 Solving 2.75 + m = 3.816084381 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '-2.75' to each side of the equation. 2.75 + -2.75 + m = 3.816084381 + -2.75 Combine like terms: 2.75 + -2.75 = 0.00 0.00 + m = 3.816084381 + -2.75 m = 3.816084381 + -2.75 Combine like terms: 3.816084381 + -2.75 = 1.066084381 m = 1.066084381 Simplifying m = 1.066084381

Subproblem 2

m + 2.75 = -3.816084381 Simplifying m + 2.75 = -3.816084381 Reorder the terms: 2.75 + m = -3.816084381 Solving 2.75 + m = -3.816084381 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '-2.75' to each side of the equation. 2.75 + -2.75 + m = -3.816084381 + -2.75 Combine like terms: 2.75 + -2.75 = 0.00 0.00 + m = -3.816084381 + -2.75 m = -3.816084381 + -2.75 Combine like terms: -3.816084381 + -2.75 = -6.566084381 m = -6.566084381 Simplifying m = -6.566084381

Solution

The solution to the problem is based on the solutions from the subproblems. m = {1.066084381, -6.566084381}

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