7m^2-6m-30=0

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Solution for 7m^2-6m-30=0 equation:


Simplifying
7m2 + -6m + -30 = 0

Reorder the terms:
-30 + -6m + 7m2 = 0

Solving
-30 + -6m + 7m2 = 0

Solving for variable 'm'.

Begin completing the square.  Divide all terms by
7 the coefficient of the squared term: 

Divide each side by '7'.
-4.285714286 + -0.8571428571m + m2 = 0

Move the constant term to the right:

Add '4.285714286' to each side of the equation.
-4.285714286 + -0.8571428571m + 4.285714286 + m2 = 0 + 4.285714286

Reorder the terms:
-4.285714286 + 4.285714286 + -0.8571428571m + m2 = 0 + 4.285714286

Combine like terms: -4.285714286 + 4.285714286 = 0.000000000
0.000000000 + -0.8571428571m + m2 = 0 + 4.285714286
-0.8571428571m + m2 = 0 + 4.285714286

Combine like terms: 0 + 4.285714286 = 4.285714286
-0.8571428571m + m2 = 4.285714286

The m term is -0.8571428571m.  Take half its coefficient (-0.4285714286).
Square it (0.1836734694) and add it to both sides.

Add '0.1836734694' to each side of the equation.
-0.8571428571m + 0.1836734694 + m2 = 4.285714286 + 0.1836734694

Reorder the terms:
0.1836734694 + -0.8571428571m + m2 = 4.285714286 + 0.1836734694

Combine like terms: 4.285714286 + 0.1836734694 = 4.4693877554
0.1836734694 + -0.8571428571m + m2 = 4.4693877554

Factor a perfect square on the left side:
(m + -0.4285714286)(m + -0.4285714286) = 4.4693877554

Calculate the square root of the right side: 2.114092655

Break this problem into two subproblems by setting 
(m + -0.4285714286) equal to 2.114092655 and -2.114092655.

Subproblem 1

m + -0.4285714286 = 2.114092655 Simplifying m + -0.4285714286 = 2.114092655 Reorder the terms: -0.4285714286 + m = 2.114092655 Solving -0.4285714286 + m = 2.114092655 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '0.4285714286' to each side of the equation. -0.4285714286 + 0.4285714286 + m = 2.114092655 + 0.4285714286 Combine like terms: -0.4285714286 + 0.4285714286 = 0.0000000000 0.0000000000 + m = 2.114092655 + 0.4285714286 m = 2.114092655 + 0.4285714286 Combine like terms: 2.114092655 + 0.4285714286 = 2.5426640836 m = 2.5426640836 Simplifying m = 2.5426640836

Subproblem 2

m + -0.4285714286 = -2.114092655 Simplifying m + -0.4285714286 = -2.114092655 Reorder the terms: -0.4285714286 + m = -2.114092655 Solving -0.4285714286 + m = -2.114092655 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '0.4285714286' to each side of the equation. -0.4285714286 + 0.4285714286 + m = -2.114092655 + 0.4285714286 Combine like terms: -0.4285714286 + 0.4285714286 = 0.0000000000 0.0000000000 + m = -2.114092655 + 0.4285714286 m = -2.114092655 + 0.4285714286 Combine like terms: -2.114092655 + 0.4285714286 = -1.6855212264 m = -1.6855212264 Simplifying m = -1.6855212264

Solution

The solution to the problem is based on the solutions from the subproblems. m = {2.5426640836, -1.6855212264}

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