9m^2-2m-6=0

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Solution for 9m^2-2m-6=0 equation:


Simplifying
9m2 + -2m + -6 = 0

Reorder the terms:
-6 + -2m + 9m2 = 0

Solving
-6 + -2m + 9m2 = 0

Solving for variable 'm'.

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

Divide each side by '9'.
-0.6666666667 + -0.2222222222m + m2 = 0

Move the constant term to the right:

Add '0.6666666667' to each side of the equation.
-0.6666666667 + -0.2222222222m + 0.6666666667 + m2 = 0 + 0.6666666667

Reorder the terms:
-0.6666666667 + 0.6666666667 + -0.2222222222m + m2 = 0 + 0.6666666667

Combine like terms: -0.6666666667 + 0.6666666667 = 0.0000000000
0.0000000000 + -0.2222222222m + m2 = 0 + 0.6666666667
-0.2222222222m + m2 = 0 + 0.6666666667

Combine like terms: 0 + 0.6666666667 = 0.6666666667
-0.2222222222m + m2 = 0.6666666667

The m term is -0.2222222222m.  Take half its coefficient (-0.1111111111).
Square it (0.01234567901) and add it to both sides.

Add '0.01234567901' to each side of the equation.
-0.2222222222m + 0.01234567901 + m2 = 0.6666666667 + 0.01234567901

Reorder the terms:
0.01234567901 + -0.2222222222m + m2 = 0.6666666667 + 0.01234567901

Combine like terms: 0.6666666667 + 0.01234567901 = 0.67901234571
0.01234567901 + -0.2222222222m + m2 = 0.67901234571

Factor a perfect square on the left side:
(m + -0.1111111111)(m + -0.1111111111) = 0.67901234571

Calculate the square root of the right side: 0.824022054

Break this problem into two subproblems by setting 
(m + -0.1111111111) equal to 0.824022054 and -0.824022054.

Subproblem 1

m + -0.1111111111 = 0.824022054 Simplifying m + -0.1111111111 = 0.824022054 Reorder the terms: -0.1111111111 + m = 0.824022054 Solving -0.1111111111 + m = 0.824022054 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '0.1111111111' to each side of the equation. -0.1111111111 + 0.1111111111 + m = 0.824022054 + 0.1111111111 Combine like terms: -0.1111111111 + 0.1111111111 = 0.0000000000 0.0000000000 + m = 0.824022054 + 0.1111111111 m = 0.824022054 + 0.1111111111 Combine like terms: 0.824022054 + 0.1111111111 = 0.9351331651 m = 0.9351331651 Simplifying m = 0.9351331651

Subproblem 2

m + -0.1111111111 = -0.824022054 Simplifying m + -0.1111111111 = -0.824022054 Reorder the terms: -0.1111111111 + m = -0.824022054 Solving -0.1111111111 + m = -0.824022054 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '0.1111111111' to each side of the equation. -0.1111111111 + 0.1111111111 + m = -0.824022054 + 0.1111111111 Combine like terms: -0.1111111111 + 0.1111111111 = 0.0000000000 0.0000000000 + m = -0.824022054 + 0.1111111111 m = -0.824022054 + 0.1111111111 Combine like terms: -0.824022054 + 0.1111111111 = -0.7129109429 m = -0.7129109429 Simplifying m = -0.7129109429

Solution

The solution to the problem is based on the solutions from the subproblems. m = {0.9351331651, -0.7129109429}

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