[(7m^2+5m-5)-(5m^2-3m+8)]-(m^2+m+3)=

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Solution for [(7m^2+5m-5)-(5m^2-3m+8)]-(m^2+m+3)= equation:


Simplifying
[(7m2 + 5m + -5) + -1(5m2 + -3m + 8)] + -1(m2 + m + 3) = 0

Reorder the terms:
[(-5 + 5m + 7m2) + -1(5m2 + -3m + 8)] + -1(m2 + m + 3) = 0

Remove parenthesis around (-5 + 5m + 7m2)
[-5 + 5m + 7m2 + -1(5m2 + -3m + 8)] + -1(m2 + m + 3) = 0

Reorder the terms:
[-5 + 5m + 7m2 + -1(8 + -3m + 5m2)] + -1(m2 + m + 3) = 0
[-5 + 5m + 7m2 + (8 * -1 + -3m * -1 + 5m2 * -1)] + -1(m2 + m + 3) = 0
[-5 + 5m + 7m2 + (-8 + 3m + -5m2)] + -1(m2 + m + 3) = 0

Reorder the terms:
[-5 + -8 + 5m + 3m + 7m2 + -5m2] + -1(m2 + m + 3) = 0

Combine like terms: -5 + -8 = -13
[-13 + 5m + 3m + 7m2 + -5m2] + -1(m2 + m + 3) = 0

Combine like terms: 5m + 3m = 8m
[-13 + 8m + 7m2 + -5m2] + -1(m2 + m + 3) = 0

Combine like terms: 7m2 + -5m2 = 2m2
[-13 + 8m + 2m2] + -1(m2 + m + 3) = 0

Remove brackets around [-13 + 8m + 2m2]
-13 + 8m + 2m2 + -1(m2 + m + 3) = 0

Reorder the terms:
-13 + 8m + 2m2 + -1(3 + m + m2) = 0
-13 + 8m + 2m2 + (3 * -1 + m * -1 + m2 * -1) = 0
-13 + 8m + 2m2 + (-3 + -1m + -1m2) = 0

Reorder the terms:
-13 + -3 + 8m + -1m + 2m2 + -1m2 = 0

Combine like terms: -13 + -3 = -16
-16 + 8m + -1m + 2m2 + -1m2 = 0

Combine like terms: 8m + -1m = 7m
-16 + 7m + 2m2 + -1m2 = 0

Combine like terms: 2m2 + -1m2 = 1m2
-16 + 7m + 1m2 = 0

Solving
-16 + 7m + 1m2 = 0

Solving for variable 'm'.

Begin completing the square.

Move the constant term to the right:

Add '16' to each side of the equation.
-16 + 7m + 16 + m2 = 0 + 16

Reorder the terms:
-16 + 16 + 7m + m2 = 0 + 16

Combine like terms: -16 + 16 = 0
0 + 7m + m2 = 0 + 16
7m + m2 = 0 + 16

Combine like terms: 0 + 16 = 16
7m + m2 = 16

The m term is 7m.  Take half its coefficient (3.5).
Square it (12.25) and add it to both sides.

Add '12.25' to each side of the equation.
7m + 12.25 + m2 = 16 + 12.25

Reorder the terms:
12.25 + 7m + m2 = 16 + 12.25

Combine like terms: 16 + 12.25 = 28.25
12.25 + 7m + m2 = 28.25

Factor a perfect square on the left side:
(m + 3.5)(m + 3.5) = 28.25

Calculate the square root of the right side: 5.315072906

Break this problem into two subproblems by setting 
(m + 3.5) equal to 5.315072906 and -5.315072906.

Subproblem 1

m + 3.5 = 5.315072906 Simplifying m + 3.5 = 5.315072906 Reorder the terms: 3.5 + m = 5.315072906 Solving 3.5 + m = 5.315072906 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '-3.5' to each side of the equation. 3.5 + -3.5 + m = 5.315072906 + -3.5 Combine like terms: 3.5 + -3.5 = 0.0 0.0 + m = 5.315072906 + -3.5 m = 5.315072906 + -3.5 Combine like terms: 5.315072906 + -3.5 = 1.815072906 m = 1.815072906 Simplifying m = 1.815072906

Subproblem 2

m + 3.5 = -5.315072906 Simplifying m + 3.5 = -5.315072906 Reorder the terms: 3.5 + m = -5.315072906 Solving 3.5 + m = -5.315072906 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '-3.5' to each side of the equation. 3.5 + -3.5 + m = -5.315072906 + -3.5 Combine like terms: 3.5 + -3.5 = 0.0 0.0 + m = -5.315072906 + -3.5 m = -5.315072906 + -3.5 Combine like terms: -5.315072906 + -3.5 = -8.815072906 m = -8.815072906 Simplifying m = -8.815072906

Solution

The solution to the problem is based on the solutions from the subproblems. m = {1.815072906, -8.815072906}

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