5a^2=-8+a

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Solution for 5a^2=-8+a equation:


Simplifying
5a2 = -8 + a

Solving
5a2 = -8 + a

Solving for variable 'a'.

Reorder the terms:
8 + -1a + 5a2 = -8 + a + 8 + -1a

Reorder the terms:
8 + -1a + 5a2 = -8 + 8 + a + -1a

Combine like terms: -8 + 8 = 0
8 + -1a + 5a2 = 0 + a + -1a
8 + -1a + 5a2 = a + -1a

Combine like terms: a + -1a = 0
8 + -1a + 5a2 = 0

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

Divide each side by '5'.
1.6 + -0.2a + a2 = 0

Move the constant term to the right:

Add '-1.6' to each side of the equation.
1.6 + -0.2a + -1.6 + a2 = 0 + -1.6

Reorder the terms:
1.6 + -1.6 + -0.2a + a2 = 0 + -1.6

Combine like terms: 1.6 + -1.6 = 0.0
0.0 + -0.2a + a2 = 0 + -1.6
-0.2a + a2 = 0 + -1.6

Combine like terms: 0 + -1.6 = -1.6
-0.2a + a2 = -1.6

The a term is -0.2a.  Take half its coefficient (-0.1).
Square it (0.01) and add it to both sides.

Add '0.01' to each side of the equation.
-0.2a + 0.01 + a2 = -1.6 + 0.01

Reorder the terms:
0.01 + -0.2a + a2 = -1.6 + 0.01

Combine like terms: -1.6 + 0.01 = -1.59
0.01 + -0.2a + a2 = -1.59

Factor a perfect square on the left side:
(a + -0.1)(a + -0.1) = -1.59

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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