7x^2=x-8

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Solution for 7x^2=x-8 equation:


Simplifying
7x2 = x + -8

Reorder the terms:
7x2 = -8 + x

Solving
7x2 = -8 + x

Solving for variable 'x'.

Reorder the terms:
8 + -1x + 7x2 = -8 + x + 8 + -1x

Reorder the terms:
8 + -1x + 7x2 = -8 + 8 + x + -1x

Combine like terms: -8 + 8 = 0
8 + -1x + 7x2 = 0 + x + -1x
8 + -1x + 7x2 = x + -1x

Combine like terms: x + -1x = 0
8 + -1x + 7x2 = 0

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

Divide each side by '7'.
1.142857143 + -0.1428571429x + x2 = 0

Move the constant term to the right:

Add '-1.142857143' to each side of the equation.
1.142857143 + -0.1428571429x + -1.142857143 + x2 = 0 + -1.142857143

Reorder the terms:
1.142857143 + -1.142857143 + -0.1428571429x + x2 = 0 + -1.142857143

Combine like terms: 1.142857143 + -1.142857143 = 0.000000000
0.000000000 + -0.1428571429x + x2 = 0 + -1.142857143
-0.1428571429x + x2 = 0 + -1.142857143

Combine like terms: 0 + -1.142857143 = -1.142857143
-0.1428571429x + x2 = -1.142857143

The x term is -0.1428571429x.  Take half its coefficient (-0.07142857145).
Square it (0.005102040819) and add it to both sides.

Add '0.005102040819' to each side of the equation.
-0.1428571429x + 0.005102040819 + x2 = -1.142857143 + 0.005102040819

Reorder the terms:
0.005102040819 + -0.1428571429x + x2 = -1.142857143 + 0.005102040819

Combine like terms: -1.142857143 + 0.005102040819 = -1.137755102181
0.005102040819 + -0.1428571429x + x2 = -1.137755102181

Factor a perfect square on the left side:
(x + -0.07142857145)(x + -0.07142857145) = -1.137755102181

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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