m^2-7m=3

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Solution for m^2-7m=3 equation:


Simplifying
m2 + -7m = 3

Reorder the terms:
-7m + m2 = 3

Solving
-7m + m2 = 3

Solving for variable 'm'.

Reorder the terms:
-3 + -7m + m2 = 3 + -3

Combine like terms: 3 + -3 = 0
-3 + -7m + m2 = 0

Begin completing the square.

Move the constant term to the right:

Add '3' to each side of the equation.
-3 + -7m + 3 + m2 = 0 + 3

Reorder the terms:
-3 + 3 + -7m + m2 = 0 + 3

Combine like terms: -3 + 3 = 0
0 + -7m + m2 = 0 + 3
-7m + m2 = 0 + 3

Combine like terms: 0 + 3 = 3
-7m + m2 = 3

The m term is -7m.  Take half its coefficient (-3.5).
Square it (12.25) and add it to both sides.

Add '12.25' to each side of the equation.
-7m + 12.25 + m2 = 3 + 12.25

Reorder the terms:
12.25 + -7m + m2 = 3 + 12.25

Combine like terms: 3 + 12.25 = 15.25
12.25 + -7m + m2 = 15.25

Factor a perfect square on the left side:
(m + -3.5)(m + -3.5) = 15.25

Calculate the square root of the right side: 3.905124838

Break this problem into two subproblems by setting 
(m + -3.5) equal to 3.905124838 and -3.905124838.

Subproblem 1

m + -3.5 = 3.905124838 Simplifying m + -3.5 = 3.905124838 Reorder the terms: -3.5 + m = 3.905124838 Solving -3.5 + m = 3.905124838 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '3.5' to each side of the equation. -3.5 + 3.5 + m = 3.905124838 + 3.5 Combine like terms: -3.5 + 3.5 = 0.0 0.0 + m = 3.905124838 + 3.5 m = 3.905124838 + 3.5 Combine like terms: 3.905124838 + 3.5 = 7.405124838 m = 7.405124838 Simplifying m = 7.405124838

Subproblem 2

m + -3.5 = -3.905124838 Simplifying m + -3.5 = -3.905124838 Reorder the terms: -3.5 + m = -3.905124838 Solving -3.5 + m = -3.905124838 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '3.5' to each side of the equation. -3.5 + 3.5 + m = -3.905124838 + 3.5 Combine like terms: -3.5 + 3.5 = 0.0 0.0 + m = -3.905124838 + 3.5 m = -3.905124838 + 3.5 Combine like terms: -3.905124838 + 3.5 = -0.405124838 m = -0.405124838 Simplifying m = -0.405124838

Solution

The solution to the problem is based on the solutions from the subproblems. m = {7.405124838, -0.405124838}

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