6m^2-20=9m

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Solution for 6m^2-20=9m equation:


Simplifying
6m2 + -20 = 9m

Reorder the terms:
-20 + 6m2 = 9m

Solving
-20 + 6m2 = 9m

Solving for variable 'm'.

Reorder the terms:
-20 + -9m + 6m2 = 9m + -9m

Combine like terms: 9m + -9m = 0
-20 + -9m + 6m2 = 0

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

Divide each side by '6'.
-3.333333333 + -1.5m + m2 = 0

Move the constant term to the right:

Add '3.333333333' to each side of the equation.
-3.333333333 + -1.5m + 3.333333333 + m2 = 0 + 3.333333333

Reorder the terms:
-3.333333333 + 3.333333333 + -1.5m + m2 = 0 + 3.333333333

Combine like terms: -3.333333333 + 3.333333333 = 0.000000000
0.000000000 + -1.5m + m2 = 0 + 3.333333333
-1.5m + m2 = 0 + 3.333333333

Combine like terms: 0 + 3.333333333 = 3.333333333
-1.5m + m2 = 3.333333333

The m term is -1.5m.  Take half its coefficient (-0.75).
Square it (0.5625) and add it to both sides.

Add '0.5625' to each side of the equation.
-1.5m + 0.5625 + m2 = 3.333333333 + 0.5625

Reorder the terms:
0.5625 + -1.5m + m2 = 3.333333333 + 0.5625

Combine like terms: 3.333333333 + 0.5625 = 3.895833333
0.5625 + -1.5m + m2 = 3.895833333

Factor a perfect square on the left side:
(m + -0.75)(m + -0.75) = 3.895833333

Calculate the square root of the right side: 1.973786547

Break this problem into two subproblems by setting 
(m + -0.75) equal to 1.973786547 and -1.973786547.

Subproblem 1

m + -0.75 = 1.973786547 Simplifying m + -0.75 = 1.973786547 Reorder the terms: -0.75 + m = 1.973786547 Solving -0.75 + m = 1.973786547 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '0.75' to each side of the equation. -0.75 + 0.75 + m = 1.973786547 + 0.75 Combine like terms: -0.75 + 0.75 = 0.00 0.00 + m = 1.973786547 + 0.75 m = 1.973786547 + 0.75 Combine like terms: 1.973786547 + 0.75 = 2.723786547 m = 2.723786547 Simplifying m = 2.723786547

Subproblem 2

m + -0.75 = -1.973786547 Simplifying m + -0.75 = -1.973786547 Reorder the terms: -0.75 + m = -1.973786547 Solving -0.75 + m = -1.973786547 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '0.75' to each side of the equation. -0.75 + 0.75 + m = -1.973786547 + 0.75 Combine like terms: -0.75 + 0.75 = 0.00 0.00 + m = -1.973786547 + 0.75 m = -1.973786547 + 0.75 Combine like terms: -1.973786547 + 0.75 = -1.223786547 m = -1.223786547 Simplifying m = -1.223786547

Solution

The solution to the problem is based on the solutions from the subproblems. m = {2.723786547, -1.223786547}

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