m^2=84+20m

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Solution for m^2=84+20m equation:


Simplifying
m2 = 84 + 20m

Solving
m2 = 84 + 20m

Solving for variable 'm'.

Reorder the terms:
-84 + -20m + m2 = 84 + 20m + -84 + -20m

Reorder the terms:
-84 + -20m + m2 = 84 + -84 + 20m + -20m

Combine like terms: 84 + -84 = 0
-84 + -20m + m2 = 0 + 20m + -20m
-84 + -20m + m2 = 20m + -20m

Combine like terms: 20m + -20m = 0
-84 + -20m + m2 = 0

Begin completing the square.

Move the constant term to the right:

Add '84' to each side of the equation.
-84 + -20m + 84 + m2 = 0 + 84

Reorder the terms:
-84 + 84 + -20m + m2 = 0 + 84

Combine like terms: -84 + 84 = 0
0 + -20m + m2 = 0 + 84
-20m + m2 = 0 + 84

Combine like terms: 0 + 84 = 84
-20m + m2 = 84

The m term is -20m.  Take half its coefficient (-10).
Square it (100) and add it to both sides.

Add '100' to each side of the equation.
-20m + 100 + m2 = 84 + 100

Reorder the terms:
100 + -20m + m2 = 84 + 100

Combine like terms: 84 + 100 = 184
100 + -20m + m2 = 184

Factor a perfect square on the left side:
(m + -10)(m + -10) = 184

Calculate the square root of the right side: 13.564659966

Break this problem into two subproblems by setting 
(m + -10) equal to 13.564659966 and -13.564659966.

Subproblem 1

m + -10 = 13.564659966 Simplifying m + -10 = 13.564659966 Reorder the terms: -10 + m = 13.564659966 Solving -10 + m = 13.564659966 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '10' to each side of the equation. -10 + 10 + m = 13.564659966 + 10 Combine like terms: -10 + 10 = 0 0 + m = 13.564659966 + 10 m = 13.564659966 + 10 Combine like terms: 13.564659966 + 10 = 23.564659966 m = 23.564659966 Simplifying m = 23.564659966

Subproblem 2

m + -10 = -13.564659966 Simplifying m + -10 = -13.564659966 Reorder the terms: -10 + m = -13.564659966 Solving -10 + m = -13.564659966 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '10' to each side of the equation. -10 + 10 + m = -13.564659966 + 10 Combine like terms: -10 + 10 = 0 0 + m = -13.564659966 + 10 m = -13.564659966 + 10 Combine like terms: -13.564659966 + 10 = -3.564659966 m = -3.564659966 Simplifying m = -3.564659966

Solution

The solution to the problem is based on the solutions from the subproblems. m = {23.564659966, -3.564659966}

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