-4m(m-9)=3m-6

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Solution for -4m(m-9)=3m-6 equation:


Simplifying
-4m(m + -9) = 3m + -6

Reorder the terms:
-4m(-9 + m) = 3m + -6
(-9 * -4m + m * -4m) = 3m + -6
(36m + -4m2) = 3m + -6

Reorder the terms:
36m + -4m2 = -6 + 3m

Solving
36m + -4m2 = -6 + 3m

Solving for variable 'm'.

Reorder the terms:
6 + 36m + -3m + -4m2 = -6 + 3m + 6 + -3m

Combine like terms: 36m + -3m = 33m
6 + 33m + -4m2 = -6 + 3m + 6 + -3m

Reorder the terms:
6 + 33m + -4m2 = -6 + 6 + 3m + -3m

Combine like terms: -6 + 6 = 0
6 + 33m + -4m2 = 0 + 3m + -3m
6 + 33m + -4m2 = 3m + -3m

Combine like terms: 3m + -3m = 0
6 + 33m + -4m2 = 0

Begin completing the square.  Divide all terms by
-4 the coefficient of the squared term: 

Divide each side by '-4'.
-1.5 + -8.25m + m2 = 0

Move the constant term to the right:

Add '1.5' to each side of the equation.
-1.5 + -8.25m + 1.5 + m2 = 0 + 1.5

Reorder the terms:
-1.5 + 1.5 + -8.25m + m2 = 0 + 1.5

Combine like terms: -1.5 + 1.5 = 0.0
0.0 + -8.25m + m2 = 0 + 1.5
-8.25m + m2 = 0 + 1.5

Combine like terms: 0 + 1.5 = 1.5
-8.25m + m2 = 1.5

The m term is -8.25m.  Take half its coefficient (-4.125).
Square it (17.015625) and add it to both sides.

Add '17.015625' to each side of the equation.
-8.25m + 17.015625 + m2 = 1.5 + 17.015625

Reorder the terms:
17.015625 + -8.25m + m2 = 1.5 + 17.015625

Combine like terms: 1.5 + 17.015625 = 18.515625
17.015625 + -8.25m + m2 = 18.515625

Factor a perfect square on the left side:
(m + -4.125)(m + -4.125) = 18.515625

Calculate the square root of the right side: 4.30297862

Break this problem into two subproblems by setting 
(m + -4.125) equal to 4.30297862 and -4.30297862.

Subproblem 1

m + -4.125 = 4.30297862 Simplifying m + -4.125 = 4.30297862 Reorder the terms: -4.125 + m = 4.30297862 Solving -4.125 + m = 4.30297862 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '4.125' to each side of the equation. -4.125 + 4.125 + m = 4.30297862 + 4.125 Combine like terms: -4.125 + 4.125 = 0.000 0.000 + m = 4.30297862 + 4.125 m = 4.30297862 + 4.125 Combine like terms: 4.30297862 + 4.125 = 8.42797862 m = 8.42797862 Simplifying m = 8.42797862

Subproblem 2

m + -4.125 = -4.30297862 Simplifying m + -4.125 = -4.30297862 Reorder the terms: -4.125 + m = -4.30297862 Solving -4.125 + m = -4.30297862 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '4.125' to each side of the equation. -4.125 + 4.125 + m = -4.30297862 + 4.125 Combine like terms: -4.125 + 4.125 = 0.000 0.000 + m = -4.30297862 + 4.125 m = -4.30297862 + 4.125 Combine like terms: -4.30297862 + 4.125 = -0.17797862 m = -0.17797862 Simplifying m = -0.17797862

Solution

The solution to the problem is based on the solutions from the subproblems. m = {8.42797862, -0.17797862}

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