m^2+7m=10

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Solution for m^2+7m=10 equation:


Simplifying
m2 + 7m = 10

Reorder the terms:
7m + m2 = 10

Solving
7m + m2 = 10

Solving for variable 'm'.

Reorder the terms:
-10 + 7m + m2 = 10 + -10

Combine like terms: 10 + -10 = 0
-10 + 7m + m2 = 0

Begin completing the square.

Move the constant term to the right:

Add '10' to each side of the equation.
-10 + 7m + 10 + m2 = 0 + 10

Reorder the terms:
-10 + 10 + 7m + m2 = 0 + 10

Combine like terms: -10 + 10 = 0
0 + 7m + m2 = 0 + 10
7m + m2 = 0 + 10

Combine like terms: 0 + 10 = 10
7m + m2 = 10

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 = 10 + 12.25

Reorder the terms:
12.25 + 7m + m2 = 10 + 12.25

Combine like terms: 10 + 12.25 = 22.25
12.25 + 7m + m2 = 22.25

Factor a perfect square on the left side:
(m + 3.5)(m + 3.5) = 22.25

Calculate the square root of the right side: 4.716990566

Break this problem into two subproblems by setting 
(m + 3.5) equal to 4.716990566 and -4.716990566.

Subproblem 1

m + 3.5 = 4.716990566 Simplifying m + 3.5 = 4.716990566 Reorder the terms: 3.5 + m = 4.716990566 Solving 3.5 + m = 4.716990566 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 = 4.716990566 + -3.5 Combine like terms: 3.5 + -3.5 = 0.0 0.0 + m = 4.716990566 + -3.5 m = 4.716990566 + -3.5 Combine like terms: 4.716990566 + -3.5 = 1.216990566 m = 1.216990566 Simplifying m = 1.216990566

Subproblem 2

m + 3.5 = -4.716990566 Simplifying m + 3.5 = -4.716990566 Reorder the terms: 3.5 + m = -4.716990566 Solving 3.5 + m = -4.716990566 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 = -4.716990566 + -3.5 Combine like terms: 3.5 + -3.5 = 0.0 0.0 + m = -4.716990566 + -3.5 m = -4.716990566 + -3.5 Combine like terms: -4.716990566 + -3.5 = -8.216990566 m = -8.216990566 Simplifying m = -8.216990566

Solution

The solution to the problem is based on the solutions from the subproblems. m = {1.216990566, -8.216990566}

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