7x^2+13x+7=0

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Solution for 7x^2+13x+7=0 equation:


Simplifying
7x2 + 13x + 7 = 0

Reorder the terms:
7 + 13x + 7x2 = 0

Solving
7 + 13x + 7x2 = 0

Solving for variable 'x'.

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

Divide each side by '7'.
1 + 1.857142857x + x2 = 0

Move the constant term to the right:

Add '-1' to each side of the equation.
1 + 1.857142857x + -1 + x2 = 0 + -1

Reorder the terms:
1 + -1 + 1.857142857x + x2 = 0 + -1

Combine like terms: 1 + -1 = 0
0 + 1.857142857x + x2 = 0 + -1
1.857142857x + x2 = 0 + -1

Combine like terms: 0 + -1 = -1
1.857142857x + x2 = -1

The x term is 1.857142857x.  Take half its coefficient (0.9285714285).
Square it (0.8622448978) and add it to both sides.

Add '0.8622448978' to each side of the equation.
1.857142857x + 0.8622448978 + x2 = -1 + 0.8622448978

Reorder the terms:
0.8622448978 + 1.857142857x + x2 = -1 + 0.8622448978

Combine like terms: -1 + 0.8622448978 = -0.1377551022
0.8622448978 + 1.857142857x + x2 = -0.1377551022

Factor a perfect square on the left side:
(x + 0.9285714285)(x + 0.9285714285) = -0.1377551022

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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