5x^2-4x+82=10

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Solution for 5x^2-4x+82=10 equation:


Simplifying
5x2 + -4x + 82 = 10

Reorder the terms:
82 + -4x + 5x2 = 10

Solving
82 + -4x + 5x2 = 10

Solving for variable 'x'.

Reorder the terms:
82 + -10 + -4x + 5x2 = 10 + -10

Combine like terms: 82 + -10 = 72
72 + -4x + 5x2 = 10 + -10

Combine like terms: 10 + -10 = 0
72 + -4x + 5x2 = 0

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

Divide each side by '5'.
14.4 + -0.8x + x2 = 0

Move the constant term to the right:

Add '-14.4' to each side of the equation.
14.4 + -0.8x + -14.4 + x2 = 0 + -14.4

Reorder the terms:
14.4 + -14.4 + -0.8x + x2 = 0 + -14.4

Combine like terms: 14.4 + -14.4 = 0.0
0.0 + -0.8x + x2 = 0 + -14.4
-0.8x + x2 = 0 + -14.4

Combine like terms: 0 + -14.4 = -14.4
-0.8x + x2 = -14.4

The x term is -0.8x.  Take half its coefficient (-0.4).
Square it (0.16) and add it to both sides.

Add '0.16' to each side of the equation.
-0.8x + 0.16 + x2 = -14.4 + 0.16

Reorder the terms:
0.16 + -0.8x + x2 = -14.4 + 0.16

Combine like terms: -14.4 + 0.16 = -14.24
0.16 + -0.8x + x2 = -14.24

Factor a perfect square on the left side:
(x + -0.4)(x + -0.4) = -14.24

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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