2a^2-7a+17=0

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Solution for 2a^2-7a+17=0 equation:


Simplifying
2a2 + -7a + 17 = 0

Reorder the terms:
17 + -7a + 2a2 = 0

Solving
17 + -7a + 2a2 = 0

Solving for variable 'a'.

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

Divide each side by '2'.
8.5 + -3.5a + a2 = 0

Move the constant term to the right:

Add '-8.5' to each side of the equation.
8.5 + -3.5a + -8.5 + a2 = 0 + -8.5

Reorder the terms:
8.5 + -8.5 + -3.5a + a2 = 0 + -8.5

Combine like terms: 8.5 + -8.5 = 0.0
0.0 + -3.5a + a2 = 0 + -8.5
-3.5a + a2 = 0 + -8.5

Combine like terms: 0 + -8.5 = -8.5
-3.5a + a2 = -8.5

The a term is -3.5a.  Take half its coefficient (-1.75).
Square it (3.0625) and add it to both sides.

Add '3.0625' to each side of the equation.
-3.5a + 3.0625 + a2 = -8.5 + 3.0625

Reorder the terms:
3.0625 + -3.5a + a2 = -8.5 + 3.0625

Combine like terms: -8.5 + 3.0625 = -5.4375
3.0625 + -3.5a + a2 = -5.4375

Factor a perfect square on the left side:
(a + -1.75)(a + -1.75) = -5.4375

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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