3-5x^2=8-x

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Solution for 3-5x^2=8-x equation:


Simplifying
3 + -5x2 = 8 + -1x

Solving
3 + -5x2 = 8 + -1x

Solving for variable 'x'.

Reorder the terms:
3 + -8 + x + -5x2 = 8 + -1x + -8 + x

Combine like terms: 3 + -8 = -5
-5 + x + -5x2 = 8 + -1x + -8 + x

Reorder the terms:
-5 + x + -5x2 = 8 + -8 + -1x + x

Combine like terms: 8 + -8 = 0
-5 + x + -5x2 = 0 + -1x + x
-5 + x + -5x2 = -1x + x

Combine like terms: -1x + x = 0
-5 + x + -5x2 = 0

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

Divide each side by '-5'.
1 + -0.2x + x2 = 0

Move the constant term to the right:

Add '-1' to each side of the equation.
1 + -0.2x + -1 + x2 = 0 + -1

Reorder the terms:
1 + -1 + -0.2x + x2 = 0 + -1

Combine like terms: 1 + -1 = 0
0 + -0.2x + x2 = 0 + -1
-0.2x + x2 = 0 + -1

Combine like terms: 0 + -1 = -1
-0.2x + x2 = -1

The x term is x.  Take half its coefficient (0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
-0.2x + 0.25 + x2 = -1 + 0.25

Reorder the terms:
0.25 + -0.2x + x2 = -1 + 0.25

Combine like terms: -1 + 0.25 = -0.75
0.25 + -0.2x + x2 = -0.75

Factor a perfect square on the left side:
(x + 0.5)(x + 0.5) = -0.75

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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