m^2+3m-17=0

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Solution for m^2+3m-17=0 equation:


Simplifying
m2 + 3m + -17 = 0

Reorder the terms:
-17 + 3m + m2 = 0

Solving
-17 + 3m + m2 = 0

Solving for variable 'm'.

Begin completing the square.

Move the constant term to the right:

Add '17' to each side of the equation.
-17 + 3m + 17 + m2 = 0 + 17

Reorder the terms:
-17 + 17 + 3m + m2 = 0 + 17

Combine like terms: -17 + 17 = 0
0 + 3m + m2 = 0 + 17
3m + m2 = 0 + 17

Combine like terms: 0 + 17 = 17
3m + m2 = 17

The m term is 3m.  Take half its coefficient (1.5).
Square it (2.25) and add it to both sides.

Add '2.25' to each side of the equation.
3m + 2.25 + m2 = 17 + 2.25

Reorder the terms:
2.25 + 3m + m2 = 17 + 2.25

Combine like terms: 17 + 2.25 = 19.25
2.25 + 3m + m2 = 19.25

Factor a perfect square on the left side:
(m + 1.5)(m + 1.5) = 19.25

Calculate the square root of the right side: 4.387482194

Break this problem into two subproblems by setting 
(m + 1.5) equal to 4.387482194 and -4.387482194.

Subproblem 1

m + 1.5 = 4.387482194 Simplifying m + 1.5 = 4.387482194 Reorder the terms: 1.5 + m = 4.387482194 Solving 1.5 + m = 4.387482194 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '-1.5' to each side of the equation. 1.5 + -1.5 + m = 4.387482194 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + m = 4.387482194 + -1.5 m = 4.387482194 + -1.5 Combine like terms: 4.387482194 + -1.5 = 2.887482194 m = 2.887482194 Simplifying m = 2.887482194

Subproblem 2

m + 1.5 = -4.387482194 Simplifying m + 1.5 = -4.387482194 Reorder the terms: 1.5 + m = -4.387482194 Solving 1.5 + m = -4.387482194 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '-1.5' to each side of the equation. 1.5 + -1.5 + m = -4.387482194 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + m = -4.387482194 + -1.5 m = -4.387482194 + -1.5 Combine like terms: -4.387482194 + -1.5 = -5.887482194 m = -5.887482194 Simplifying m = -5.887482194

Solution

The solution to the problem is based on the solutions from the subproblems. m = {2.887482194, -5.887482194}

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