-8(1+9m)+4m(7m+3)=1

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Solution for -8(1+9m)+4m(7m+3)=1 equation:


Simplifying
-8(1 + 9m) + 4m(7m + 3) = 1
(1 * -8 + 9m * -8) + 4m(7m + 3) = 1
(-8 + -72m) + 4m(7m + 3) = 1

Reorder the terms:
-8 + -72m + 4m(3 + 7m) = 1
-8 + -72m + (3 * 4m + 7m * 4m) = 1
-8 + -72m + (12m + 28m2) = 1

Combine like terms: -72m + 12m = -60m
-8 + -60m + 28m2 = 1

Solving
-8 + -60m + 28m2 = 1

Solving for variable 'm'.

Reorder the terms:
-8 + -1 + -60m + 28m2 = 1 + -1

Combine like terms: -8 + -1 = -9
-9 + -60m + 28m2 = 1 + -1

Combine like terms: 1 + -1 = 0
-9 + -60m + 28m2 = 0

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

Divide each side by '28'.
-0.3214285714 + -2.142857143m + m2 = 0

Move the constant term to the right:

Add '0.3214285714' to each side of the equation.
-0.3214285714 + -2.142857143m + 0.3214285714 + m2 = 0 + 0.3214285714

Reorder the terms:
-0.3214285714 + 0.3214285714 + -2.142857143m + m2 = 0 + 0.3214285714

Combine like terms: -0.3214285714 + 0.3214285714 = 0.0000000000
0.0000000000 + -2.142857143m + m2 = 0 + 0.3214285714
-2.142857143m + m2 = 0 + 0.3214285714

Combine like terms: 0 + 0.3214285714 = 0.3214285714
-2.142857143m + m2 = 0.3214285714

The m term is -2.142857143m.  Take half its coefficient (-1.071428572).
Square it (1.147959185) and add it to both sides.

Add '1.147959185' to each side of the equation.
-2.142857143m + 1.147959185 + m2 = 0.3214285714 + 1.147959185

Reorder the terms:
1.147959185 + -2.142857143m + m2 = 0.3214285714 + 1.147959185

Combine like terms: 0.3214285714 + 1.147959185 = 1.4693877564
1.147959185 + -2.142857143m + m2 = 1.4693877564

Factor a perfect square on the left side:
(m + -1.071428572)(m + -1.071428572) = 1.4693877564

Calculate the square root of the right side: 1.212183054

Break this problem into two subproblems by setting 
(m + -1.071428572) equal to 1.212183054 and -1.212183054.

Subproblem 1

m + -1.071428572 = 1.212183054 Simplifying m + -1.071428572 = 1.212183054 Reorder the terms: -1.071428572 + m = 1.212183054 Solving -1.071428572 + m = 1.212183054 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '1.071428572' to each side of the equation. -1.071428572 + 1.071428572 + m = 1.212183054 + 1.071428572 Combine like terms: -1.071428572 + 1.071428572 = 0.000000000 0.000000000 + m = 1.212183054 + 1.071428572 m = 1.212183054 + 1.071428572 Combine like terms: 1.212183054 + 1.071428572 = 2.283611626 m = 2.283611626 Simplifying m = 2.283611626

Subproblem 2

m + -1.071428572 = -1.212183054 Simplifying m + -1.071428572 = -1.212183054 Reorder the terms: -1.071428572 + m = -1.212183054 Solving -1.071428572 + m = -1.212183054 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '1.071428572' to each side of the equation. -1.071428572 + 1.071428572 + m = -1.212183054 + 1.071428572 Combine like terms: -1.071428572 + 1.071428572 = 0.000000000 0.000000000 + m = -1.212183054 + 1.071428572 m = -1.212183054 + 1.071428572 Combine like terms: -1.212183054 + 1.071428572 = -0.140754482 m = -0.140754482 Simplifying m = -0.140754482

Solution

The solution to the problem is based on the solutions from the subproblems. m = {2.283611626, -0.140754482}

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