m^2+15m=50

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Solution for m^2+15m=50 equation:


Simplifying
m2 + 15m = 50

Reorder the terms:
15m + m2 = 50

Solving
15m + m2 = 50

Solving for variable 'm'.

Reorder the terms:
-50 + 15m + m2 = 50 + -50

Combine like terms: 50 + -50 = 0
-50 + 15m + m2 = 0

Begin completing the square.

Move the constant term to the right:

Add '50' to each side of the equation.
-50 + 15m + 50 + m2 = 0 + 50

Reorder the terms:
-50 + 50 + 15m + m2 = 0 + 50

Combine like terms: -50 + 50 = 0
0 + 15m + m2 = 0 + 50
15m + m2 = 0 + 50

Combine like terms: 0 + 50 = 50
15m + m2 = 50

The m term is 15m.  Take half its coefficient (7.5).
Square it (56.25) and add it to both sides.

Add '56.25' to each side of the equation.
15m + 56.25 + m2 = 50 + 56.25

Reorder the terms:
56.25 + 15m + m2 = 50 + 56.25

Combine like terms: 50 + 56.25 = 106.25
56.25 + 15m + m2 = 106.25

Factor a perfect square on the left side:
(m + 7.5)(m + 7.5) = 106.25

Calculate the square root of the right side: 10.307764064

Break this problem into two subproblems by setting 
(m + 7.5) equal to 10.307764064 and -10.307764064.

Subproblem 1

m + 7.5 = 10.307764064 Simplifying m + 7.5 = 10.307764064 Reorder the terms: 7.5 + m = 10.307764064 Solving 7.5 + m = 10.307764064 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '-7.5' to each side of the equation. 7.5 + -7.5 + m = 10.307764064 + -7.5 Combine like terms: 7.5 + -7.5 = 0.0 0.0 + m = 10.307764064 + -7.5 m = 10.307764064 + -7.5 Combine like terms: 10.307764064 + -7.5 = 2.807764064 m = 2.807764064 Simplifying m = 2.807764064

Subproblem 2

m + 7.5 = -10.307764064 Simplifying m + 7.5 = -10.307764064 Reorder the terms: 7.5 + m = -10.307764064 Solving 7.5 + m = -10.307764064 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '-7.5' to each side of the equation. 7.5 + -7.5 + m = -10.307764064 + -7.5 Combine like terms: 7.5 + -7.5 = 0.0 0.0 + m = -10.307764064 + -7.5 m = -10.307764064 + -7.5 Combine like terms: -10.307764064 + -7.5 = -17.807764064 m = -17.807764064 Simplifying m = -17.807764064

Solution

The solution to the problem is based on the solutions from the subproblems. m = {2.807764064, -17.807764064}

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