0.5m(2m-3)-0.8m=2.7

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Solution for 0.5m(2m-3)-0.8m=2.7 equation:


Simplifying
0.5m(2m + -3) + -0.8m = 2.7

Reorder the terms:
0.5m(-3 + 2m) + -0.8m = 2.7
(-3 * 0.5m + 2m * 0.5m) + -0.8m = 2.7
(-1.5m + 1m2) + -0.8m = 2.7

Reorder the terms:
-1.5m + -0.8m + 1m2 = 2.7

Combine like terms: -1.5m + -0.8m = -2.3m
-2.3m + 1m2 = 2.7

Solving
-2.3m + 1m2 = 2.7

Solving for variable 'm'.

Reorder the terms:
-2.7 + -2.3m + 1m2 = 2.7 + -2.7

Combine like terms: 2.7 + -2.7 = 0.0
-2.7 + -2.3m + 1m2 = 0.0

Begin completing the square.

Move the constant term to the right:

Add '2.7' to each side of the equation.
-2.7 + -2.3m + 2.7 + m2 = 0.0 + 2.7

Reorder the terms:
-2.7 + 2.7 + -2.3m + m2 = 0.0 + 2.7

Combine like terms: -2.7 + 2.7 = 0.0
0.0 + -2.3m + m2 = 0.0 + 2.7
-2.3m + m2 = 0.0 + 2.7

Combine like terms: 0.0 + 2.7 = 2.7
-2.3m + m2 = 2.7

The m term is -2.3m.  Take half its coefficient (-1.15).
Square it (1.3225) and add it to both sides.

Add '1.3225' to each side of the equation.
-2.3m + 1.3225 + m2 = 2.7 + 1.3225

Reorder the terms:
1.3225 + -2.3m + m2 = 2.7 + 1.3225

Combine like terms: 2.7 + 1.3225 = 4.0225
1.3225 + -2.3m + m2 = 4.0225

Factor a perfect square on the left side:
(m + -1.15)(m + -1.15) = 4.0225

Calculate the square root of the right side: 2.005617112

Break this problem into two subproblems by setting 
(m + -1.15) equal to 2.005617112 and -2.005617112.

Subproblem 1

m + -1.15 = 2.005617112 Simplifying m + -1.15 = 2.005617112 Reorder the terms: -1.15 + m = 2.005617112 Solving -1.15 + m = 2.005617112 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '1.15' to each side of the equation. -1.15 + 1.15 + m = 2.005617112 + 1.15 Combine like terms: -1.15 + 1.15 = 0.00 0.00 + m = 2.005617112 + 1.15 m = 2.005617112 + 1.15 Combine like terms: 2.005617112 + 1.15 = 3.155617112 m = 3.155617112 Simplifying m = 3.155617112

Subproblem 2

m + -1.15 = -2.005617112 Simplifying m + -1.15 = -2.005617112 Reorder the terms: -1.15 + m = -2.005617112 Solving -1.15 + m = -2.005617112 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '1.15' to each side of the equation. -1.15 + 1.15 + m = -2.005617112 + 1.15 Combine like terms: -1.15 + 1.15 = 0.00 0.00 + m = -2.005617112 + 1.15 m = -2.005617112 + 1.15 Combine like terms: -2.005617112 + 1.15 = -0.855617112 m = -0.855617112 Simplifying m = -0.855617112

Solution

The solution to the problem is based on the solutions from the subproblems. m = {3.155617112, -0.855617112}

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