m^2+4.5m-2.5=0

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Solution for m^2+4.5m-2.5=0 equation:


Simplifying
m2 + 4.5m + -2.5 = 0

Reorder the terms:
-2.5 + 4.5m + m2 = 0

Solving
-2.5 + 4.5m + m2 = 0

Solving for variable 'm'.

Begin completing the square.

Move the constant term to the right:

Add '2.5' to each side of the equation.
-2.5 + 4.5m + 2.5 + m2 = 0 + 2.5

Reorder the terms:
-2.5 + 2.5 + 4.5m + m2 = 0 + 2.5

Combine like terms: -2.5 + 2.5 = 0.0
0.0 + 4.5m + m2 = 0 + 2.5
4.5m + m2 = 0 + 2.5

Combine like terms: 0 + 2.5 = 2.5
4.5m + m2 = 2.5

The m term is 4.5m.  Take half its coefficient (2.25).
Square it (5.0625) and add it to both sides.

Add '5.0625' to each side of the equation.
4.5m + 5.0625 + m2 = 2.5 + 5.0625

Reorder the terms:
5.0625 + 4.5m + m2 = 2.5 + 5.0625

Combine like terms: 2.5 + 5.0625 = 7.5625
5.0625 + 4.5m + m2 = 7.5625

Factor a perfect square on the left side:
(m + 2.25)(m + 2.25) = 7.5625

Calculate the square root of the right side: 2.75

Break this problem into two subproblems by setting 
(m + 2.25) equal to 2.75 and -2.75.

Subproblem 1

m + 2.25 = 2.75 Simplifying m + 2.25 = 2.75 Reorder the terms: 2.25 + m = 2.75 Solving 2.25 + m = 2.75 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '-2.25' to each side of the equation. 2.25 + -2.25 + m = 2.75 + -2.25 Combine like terms: 2.25 + -2.25 = 0.00 0.00 + m = 2.75 + -2.25 m = 2.75 + -2.25 Combine like terms: 2.75 + -2.25 = 0.5 m = 0.5 Simplifying m = 0.5

Subproblem 2

m + 2.25 = -2.75 Simplifying m + 2.25 = -2.75 Reorder the terms: 2.25 + m = -2.75 Solving 2.25 + m = -2.75 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '-2.25' to each side of the equation. 2.25 + -2.25 + m = -2.75 + -2.25 Combine like terms: 2.25 + -2.25 = 0.00 0.00 + m = -2.75 + -2.25 m = -2.75 + -2.25 Combine like terms: -2.75 + -2.25 = -5 m = -5 Simplifying m = -5

Solution

The solution to the problem is based on the solutions from the subproblems. m = {0.5, -5}

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