4m^2-13m=-40

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Solution for 4m^2-13m=-40 equation:


Simplifying
4m2 + -13m = -40

Reorder the terms:
-13m + 4m2 = -40

Solving
-13m + 4m2 = -40

Solving for variable 'm'.

Reorder the terms:
40 + -13m + 4m2 = -40 + 40

Combine like terms: -40 + 40 = 0
40 + -13m + 4m2 = 0

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

Divide each side by '4'.
10 + -3.25m + m2 = 0

Move the constant term to the right:

Add '-10' to each side of the equation.
10 + -3.25m + -10 + m2 = 0 + -10

Reorder the terms:
10 + -10 + -3.25m + m2 = 0 + -10

Combine like terms: 10 + -10 = 0
0 + -3.25m + m2 = 0 + -10
-3.25m + m2 = 0 + -10

Combine like terms: 0 + -10 = -10
-3.25m + m2 = -10

The m term is -3.25m.  Take half its coefficient (-1.625).
Square it (2.640625) and add it to both sides.

Add '2.640625' to each side of the equation.
-3.25m + 2.640625 + m2 = -10 + 2.640625

Reorder the terms:
2.640625 + -3.25m + m2 = -10 + 2.640625

Combine like terms: -10 + 2.640625 = -7.359375
2.640625 + -3.25m + m2 = -7.359375

Factor a perfect square on the left side:
(m + -1.625)(m + -1.625) = -7.359375

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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