8x^2+13x+7=

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Solution for 8x^2+13x+7= equation:


Simplifying
8x2 + 13x + 7 = 0

Reorder the terms:
7 + 13x + 8x2 = 0

Solving
7 + 13x + 8x2 = 0

Solving for variable 'x'.

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

Divide each side by '8'.
0.875 + 1.625x + x2 = 0

Move the constant term to the right:

Add '-0.875' to each side of the equation.
0.875 + 1.625x + -0.875 + x2 = 0 + -0.875

Reorder the terms:
0.875 + -0.875 + 1.625x + x2 = 0 + -0.875

Combine like terms: 0.875 + -0.875 = 0.000
0.000 + 1.625x + x2 = 0 + -0.875
1.625x + x2 = 0 + -0.875

Combine like terms: 0 + -0.875 = -0.875
1.625x + x2 = -0.875

The x term is 1.625x.  Take half its coefficient (0.8125).
Square it (0.66015625) and add it to both sides.

Add '0.66015625' to each side of the equation.
1.625x + 0.66015625 + x2 = -0.875 + 0.66015625

Reorder the terms:
0.66015625 + 1.625x + x2 = -0.875 + 0.66015625

Combine like terms: -0.875 + 0.66015625 = -0.21484375
0.66015625 + 1.625x + x2 = -0.21484375

Factor a perfect square on the left side:
(x + 0.8125)(x + 0.8125) = -0.21484375

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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