8x^2+7x+11=5

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Solution for 8x^2+7x+11=5 equation:


Simplifying
8x2 + 7x + 11 = 5

Reorder the terms:
11 + 7x + 8x2 = 5

Solving
11 + 7x + 8x2 = 5

Solving for variable 'x'.

Reorder the terms:
11 + -5 + 7x + 8x2 = 5 + -5

Combine like terms: 11 + -5 = 6
6 + 7x + 8x2 = 5 + -5

Combine like terms: 5 + -5 = 0
6 + 7x + 8x2 = 0

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

Divide each side by '8'.
0.75 + 0.875x + x2 = 0

Move the constant term to the right:

Add '-0.75' to each side of the equation.
0.75 + 0.875x + -0.75 + x2 = 0 + -0.75

Reorder the terms:
0.75 + -0.75 + 0.875x + x2 = 0 + -0.75

Combine like terms: 0.75 + -0.75 = 0.00
0.00 + 0.875x + x2 = 0 + -0.75
0.875x + x2 = 0 + -0.75

Combine like terms: 0 + -0.75 = -0.75
0.875x + x2 = -0.75

The x term is 0.875x.  Take half its coefficient (0.4375).
Square it (0.19140625) and add it to both sides.

Add '0.19140625' to each side of the equation.
0.875x + 0.19140625 + x2 = -0.75 + 0.19140625

Reorder the terms:
0.19140625 + 0.875x + x2 = -0.75 + 0.19140625

Combine like terms: -0.75 + 0.19140625 = -0.55859375
0.19140625 + 0.875x + x2 = -0.55859375

Factor a perfect square on the left side:
(x + 0.4375)(x + 0.4375) = -0.55859375

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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