7m^2+8m+5=0

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Solution for 7m^2+8m+5=0 equation:


Simplifying
7m2 + 8m + 5 = 0

Reorder the terms:
5 + 8m + 7m2 = 0

Solving
5 + 8m + 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'.
0.7142857143 + 1.142857143m + m2 = 0

Move the constant term to the right:

Add '-0.7142857143' to each side of the equation.
0.7142857143 + 1.142857143m + -0.7142857143 + m2 = 0 + -0.7142857143

Reorder the terms:
0.7142857143 + -0.7142857143 + 1.142857143m + m2 = 0 + -0.7142857143

Combine like terms: 0.7142857143 + -0.7142857143 = 0.0000000000
0.0000000000 + 1.142857143m + m2 = 0 + -0.7142857143
1.142857143m + m2 = 0 + -0.7142857143

Combine like terms: 0 + -0.7142857143 = -0.7142857143
1.142857143m + m2 = -0.7142857143

The m term is 1.142857143m.  Take half its coefficient (0.5714285715).
Square it (0.3265306123) and add it to both sides.

Add '0.3265306123' to each side of the equation.
1.142857143m + 0.3265306123 + m2 = -0.7142857143 + 0.3265306123

Reorder the terms:
0.3265306123 + 1.142857143m + m2 = -0.7142857143 + 0.3265306123

Combine like terms: -0.7142857143 + 0.3265306123 = -0.387755102
0.3265306123 + 1.142857143m + m2 = -0.387755102

Factor a perfect square on the left side:
(m + 0.5714285715)(m + 0.5714285715) = -0.387755102

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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