-5x^2+8x-17=0

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Solution for -5x^2+8x-17=0 equation:


Simplifying
-5x2 + 8x + -17 = 0

Reorder the terms:
-17 + 8x + -5x2 = 0

Solving
-17 + 8x + -5x2 = 0

Solving for variable 'x'.

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

Divide each side by '-5'.
3.4 + -1.6x + x2 = 0

Move the constant term to the right:

Add '-3.4' to each side of the equation.
3.4 + -1.6x + -3.4 + x2 = 0 + -3.4

Reorder the terms:
3.4 + -3.4 + -1.6x + x2 = 0 + -3.4

Combine like terms: 3.4 + -3.4 = 0.0
0.0 + -1.6x + x2 = 0 + -3.4
-1.6x + x2 = 0 + -3.4

Combine like terms: 0 + -3.4 = -3.4
-1.6x + x2 = -3.4

The x term is -1.6x.  Take half its coefficient (-0.8).
Square it (0.64) and add it to both sides.

Add '0.64' to each side of the equation.
-1.6x + 0.64 + x2 = -3.4 + 0.64

Reorder the terms:
0.64 + -1.6x + x2 = -3.4 + 0.64

Combine like terms: -3.4 + 0.64 = -2.76
0.64 + -1.6x + x2 = -2.76

Factor a perfect square on the left side:
(x + -0.8)(x + -0.8) = -2.76

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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