m^2+18m-3=0

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Solution for m^2+18m-3=0 equation:


Simplifying
m2 + 18m + -3 = 0

Reorder the terms:
-3 + 18m + m2 = 0

Solving
-3 + 18m + m2 = 0

Solving for variable 'm'.

Begin completing the square.

Move the constant term to the right:

Add '3' to each side of the equation.
-3 + 18m + 3 + m2 = 0 + 3

Reorder the terms:
-3 + 3 + 18m + m2 = 0 + 3

Combine like terms: -3 + 3 = 0
0 + 18m + m2 = 0 + 3
18m + m2 = 0 + 3

Combine like terms: 0 + 3 = 3
18m + m2 = 3

The m term is 18m.  Take half its coefficient (9).
Square it (81) and add it to both sides.

Add '81' to each side of the equation.
18m + 81 + m2 = 3 + 81

Reorder the terms:
81 + 18m + m2 = 3 + 81

Combine like terms: 3 + 81 = 84
81 + 18m + m2 = 84

Factor a perfect square on the left side:
(m + 9)(m + 9) = 84

Calculate the square root of the right side: 9.16515139

Break this problem into two subproblems by setting 
(m + 9) equal to 9.16515139 and -9.16515139.

Subproblem 1

m + 9 = 9.16515139 Simplifying m + 9 = 9.16515139 Reorder the terms: 9 + m = 9.16515139 Solving 9 + m = 9.16515139 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '-9' to each side of the equation. 9 + -9 + m = 9.16515139 + -9 Combine like terms: 9 + -9 = 0 0 + m = 9.16515139 + -9 m = 9.16515139 + -9 Combine like terms: 9.16515139 + -9 = 0.16515139 m = 0.16515139 Simplifying m = 0.16515139

Subproblem 2

m + 9 = -9.16515139 Simplifying m + 9 = -9.16515139 Reorder the terms: 9 + m = -9.16515139 Solving 9 + m = -9.16515139 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '-9' to each side of the equation. 9 + -9 + m = -9.16515139 + -9 Combine like terms: 9 + -9 = 0 0 + m = -9.16515139 + -9 m = -9.16515139 + -9 Combine like terms: -9.16515139 + -9 = -18.16515139 m = -18.16515139 Simplifying m = -18.16515139

Solution

The solution to the problem is based on the solutions from the subproblems. m = {0.16515139, -18.16515139}

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