(8m^2+2m)-(-8m^2-7m+9)=

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Solution for (8m^2+2m)-(-8m^2-7m+9)= equation:


Simplifying
(8m2 + 2m) + -1(-8m2 + -7m + 9) = 0

Reorder the terms:
(2m + 8m2) + -1(-8m2 + -7m + 9) = 0

Remove parenthesis around (2m + 8m2)
2m + 8m2 + -1(-8m2 + -7m + 9) = 0

Reorder the terms:
2m + 8m2 + -1(9 + -7m + -8m2) = 0
2m + 8m2 + (9 * -1 + -7m * -1 + -8m2 * -1) = 0
2m + 8m2 + (-9 + 7m + 8m2) = 0

Reorder the terms:
-9 + 2m + 7m + 8m2 + 8m2 = 0

Combine like terms: 2m + 7m = 9m
-9 + 9m + 8m2 + 8m2 = 0

Combine like terms: 8m2 + 8m2 = 16m2
-9 + 9m + 16m2 = 0

Solving
-9 + 9m + 16m2 = 0

Solving for variable 'm'.

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

Divide each side by '16'.
-0.5625 + 0.5625m + m2 = 0

Move the constant term to the right:

Add '0.5625' to each side of the equation.
-0.5625 + 0.5625m + 0.5625 + m2 = 0 + 0.5625

Reorder the terms:
-0.5625 + 0.5625 + 0.5625m + m2 = 0 + 0.5625

Combine like terms: -0.5625 + 0.5625 = 0.0000
0.0000 + 0.5625m + m2 = 0 + 0.5625
0.5625m + m2 = 0 + 0.5625

Combine like terms: 0 + 0.5625 = 0.5625
0.5625m + m2 = 0.5625

The m term is 0.5625m.  Take half its coefficient (0.28125).
Square it (0.0791015625) and add it to both sides.

Add '0.0791015625' to each side of the equation.
0.5625m + 0.0791015625 + m2 = 0.5625 + 0.0791015625

Reorder the terms:
0.0791015625 + 0.5625m + m2 = 0.5625 + 0.0791015625

Combine like terms: 0.5625 + 0.0791015625 = 0.6416015625
0.0791015625 + 0.5625m + m2 = 0.6416015625

Factor a perfect square on the left side:
(m + 0.28125)(m + 0.28125) = 0.6416015625

Calculate the square root of the right side: 0.801000351

Break this problem into two subproblems by setting 
(m + 0.28125) equal to 0.801000351 and -0.801000351.

Subproblem 1

m + 0.28125 = 0.801000351 Simplifying m + 0.28125 = 0.801000351 Reorder the terms: 0.28125 + m = 0.801000351 Solving 0.28125 + m = 0.801000351 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '-0.28125' to each side of the equation. 0.28125 + -0.28125 + m = 0.801000351 + -0.28125 Combine like terms: 0.28125 + -0.28125 = 0.00000 0.00000 + m = 0.801000351 + -0.28125 m = 0.801000351 + -0.28125 Combine like terms: 0.801000351 + -0.28125 = 0.519750351 m = 0.519750351 Simplifying m = 0.519750351

Subproblem 2

m + 0.28125 = -0.801000351 Simplifying m + 0.28125 = -0.801000351 Reorder the terms: 0.28125 + m = -0.801000351 Solving 0.28125 + m = -0.801000351 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '-0.28125' to each side of the equation. 0.28125 + -0.28125 + m = -0.801000351 + -0.28125 Combine like terms: 0.28125 + -0.28125 = 0.00000 0.00000 + m = -0.801000351 + -0.28125 m = -0.801000351 + -0.28125 Combine like terms: -0.801000351 + -0.28125 = -1.082250351 m = -1.082250351 Simplifying m = -1.082250351

Solution

The solution to the problem is based on the solutions from the subproblems. m = {0.519750351, -1.082250351}

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