2=8m^2-7m

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Solution for 2=8m^2-7m equation:


Simplifying
2 = 8m2 + -7m

Reorder the terms:
2 = -7m + 8m2

Solving
2 = -7m + 8m2

Solving for variable 'm'.

Reorder the terms:
2 + 7m + -8m2 = -7m + 7m + 8m2 + -8m2

Combine like terms: -7m + 7m = 0
2 + 7m + -8m2 = 0 + 8m2 + -8m2
2 + 7m + -8m2 = 8m2 + -8m2

Combine like terms: 8m2 + -8m2 = 0
2 + 7m + -8m2 = 0

Begin completing the square.  Divide all terms by
-8 the coefficient of the squared term: 

Divide each side by '-8'.
-0.25 + -0.875m + m2 = 0

Move the constant term to the right:

Add '0.25' to each side of the equation.
-0.25 + -0.875m + 0.25 + m2 = 0 + 0.25

Reorder the terms:
-0.25 + 0.25 + -0.875m + m2 = 0 + 0.25

Combine like terms: -0.25 + 0.25 = 0.00
0.00 + -0.875m + m2 = 0 + 0.25
-0.875m + m2 = 0 + 0.25

Combine like terms: 0 + 0.25 = 0.25
-0.875m + m2 = 0.25

The m term is -0.875m.  Take half its coefficient (-0.4375).
Square it (0.19140625) and add it to both sides.

Add '0.19140625' to each side of the equation.
-0.875m + 0.19140625 + m2 = 0.25 + 0.19140625

Reorder the terms:
0.19140625 + -0.875m + m2 = 0.25 + 0.19140625

Combine like terms: 0.25 + 0.19140625 = 0.44140625
0.19140625 + -0.875m + m2 = 0.44140625

Factor a perfect square on the left side:
(m + -0.4375)(m + -0.4375) = 0.44140625

Calculate the square root of the right side: 0.664384113

Break this problem into two subproblems by setting 
(m + -0.4375) equal to 0.664384113 and -0.664384113.

Subproblem 1

m + -0.4375 = 0.664384113 Simplifying m + -0.4375 = 0.664384113 Reorder the terms: -0.4375 + m = 0.664384113 Solving -0.4375 + m = 0.664384113 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '0.4375' to each side of the equation. -0.4375 + 0.4375 + m = 0.664384113 + 0.4375 Combine like terms: -0.4375 + 0.4375 = 0.0000 0.0000 + m = 0.664384113 + 0.4375 m = 0.664384113 + 0.4375 Combine like terms: 0.664384113 + 0.4375 = 1.101884113 m = 1.101884113 Simplifying m = 1.101884113

Subproblem 2

m + -0.4375 = -0.664384113 Simplifying m + -0.4375 = -0.664384113 Reorder the terms: -0.4375 + m = -0.664384113 Solving -0.4375 + m = -0.664384113 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '0.4375' to each side of the equation. -0.4375 + 0.4375 + m = -0.664384113 + 0.4375 Combine like terms: -0.4375 + 0.4375 = 0.0000 0.0000 + m = -0.664384113 + 0.4375 m = -0.664384113 + 0.4375 Combine like terms: -0.664384113 + 0.4375 = -0.226884113 m = -0.226884113 Simplifying m = -0.226884113

Solution

The solution to the problem is based on the solutions from the subproblems. m = {1.101884113, -0.226884113}

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