2m^2-5m=14

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Solution for 2m^2-5m=14 equation:


Simplifying
2m2 + -5m = 14

Reorder the terms:
-5m + 2m2 = 14

Solving
-5m + 2m2 = 14

Solving for variable 'm'.

Reorder the terms:
-14 + -5m + 2m2 = 14 + -14

Combine like terms: 14 + -14 = 0
-14 + -5m + 2m2 = 0

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

Divide each side by '2'.
-7 + -2.5m + m2 = 0

Move the constant term to the right:

Add '7' to each side of the equation.
-7 + -2.5m + 7 + m2 = 0 + 7

Reorder the terms:
-7 + 7 + -2.5m + m2 = 0 + 7

Combine like terms: -7 + 7 = 0
0 + -2.5m + m2 = 0 + 7
-2.5m + m2 = 0 + 7

Combine like terms: 0 + 7 = 7
-2.5m + m2 = 7

The m term is -2.5m.  Take half its coefficient (-1.25).
Square it (1.5625) and add it to both sides.

Add '1.5625' to each side of the equation.
-2.5m + 1.5625 + m2 = 7 + 1.5625

Reorder the terms:
1.5625 + -2.5m + m2 = 7 + 1.5625

Combine like terms: 7 + 1.5625 = 8.5625
1.5625 + -2.5m + m2 = 8.5625

Factor a perfect square on the left side:
(m + -1.25)(m + -1.25) = 8.5625

Calculate the square root of the right side: 2.926174978

Break this problem into two subproblems by setting 
(m + -1.25) equal to 2.926174978 and -2.926174978.

Subproblem 1

m + -1.25 = 2.926174978 Simplifying m + -1.25 = 2.926174978 Reorder the terms: -1.25 + m = 2.926174978 Solving -1.25 + m = 2.926174978 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '1.25' to each side of the equation. -1.25 + 1.25 + m = 2.926174978 + 1.25 Combine like terms: -1.25 + 1.25 = 0.00 0.00 + m = 2.926174978 + 1.25 m = 2.926174978 + 1.25 Combine like terms: 2.926174978 + 1.25 = 4.176174978 m = 4.176174978 Simplifying m = 4.176174978

Subproblem 2

m + -1.25 = -2.926174978 Simplifying m + -1.25 = -2.926174978 Reorder the terms: -1.25 + m = -2.926174978 Solving -1.25 + m = -2.926174978 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '1.25' to each side of the equation. -1.25 + 1.25 + m = -2.926174978 + 1.25 Combine like terms: -1.25 + 1.25 = 0.00 0.00 + m = -2.926174978 + 1.25 m = -2.926174978 + 1.25 Combine like terms: -2.926174978 + 1.25 = -1.676174978 m = -1.676174978 Simplifying m = -1.676174978

Solution

The solution to the problem is based on the solutions from the subproblems. m = {4.176174978, -1.676174978}

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