m^2+4m-89=0

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Solution for m^2+4m-89=0 equation:


Simplifying
m2 + 4m + -89 = 0

Reorder the terms:
-89 + 4m + m2 = 0

Solving
-89 + 4m + m2 = 0

Solving for variable 'm'.

Begin completing the square.

Move the constant term to the right:

Add '89' to each side of the equation.
-89 + 4m + 89 + m2 = 0 + 89

Reorder the terms:
-89 + 89 + 4m + m2 = 0 + 89

Combine like terms: -89 + 89 = 0
0 + 4m + m2 = 0 + 89
4m + m2 = 0 + 89

Combine like terms: 0 + 89 = 89
4m + m2 = 89

The m term is 4m.  Take half its coefficient (2).
Square it (4) and add it to both sides.

Add '4' to each side of the equation.
4m + 4 + m2 = 89 + 4

Reorder the terms:
4 + 4m + m2 = 89 + 4

Combine like terms: 89 + 4 = 93
4 + 4m + m2 = 93

Factor a perfect square on the left side:
(m + 2)(m + 2) = 93

Calculate the square root of the right side: 9.643650761

Break this problem into two subproblems by setting 
(m + 2) equal to 9.643650761 and -9.643650761.

Subproblem 1

m + 2 = 9.643650761 Simplifying m + 2 = 9.643650761 Reorder the terms: 2 + m = 9.643650761 Solving 2 + m = 9.643650761 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + m = 9.643650761 + -2 Combine like terms: 2 + -2 = 0 0 + m = 9.643650761 + -2 m = 9.643650761 + -2 Combine like terms: 9.643650761 + -2 = 7.643650761 m = 7.643650761 Simplifying m = 7.643650761

Subproblem 2

m + 2 = -9.643650761 Simplifying m + 2 = -9.643650761 Reorder the terms: 2 + m = -9.643650761 Solving 2 + m = -9.643650761 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + m = -9.643650761 + -2 Combine like terms: 2 + -2 = 0 0 + m = -9.643650761 + -2 m = -9.643650761 + -2 Combine like terms: -9.643650761 + -2 = -11.643650761 m = -11.643650761 Simplifying m = -11.643650761

Solution

The solution to the problem is based on the solutions from the subproblems. m = {7.643650761, -11.643650761}

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