(3a^2+2a+8)+(5a^2-a)=

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Solution for (3a^2+2a+8)+(5a^2-a)= equation:


Simplifying
(3a2 + 2a + 8) + (5a2 + -1a) = 0

Reorder the terms:
(8 + 2a + 3a2) + (5a2 + -1a) = 0

Remove parenthesis around (8 + 2a + 3a2)
8 + 2a + 3a2 + (5a2 + -1a) = 0

Reorder the terms:
8 + 2a + 3a2 + (-1a + 5a2) = 0

Remove parenthesis around (-1a + 5a2)
8 + 2a + 3a2 + -1a + 5a2 = 0

Reorder the terms:
8 + 2a + -1a + 3a2 + 5a2 = 0

Combine like terms: 2a + -1a = 1a
8 + 1a + 3a2 + 5a2 = 0

Combine like terms: 3a2 + 5a2 = 8a2
8 + 1a + 8a2 = 0

Solving
8 + 1a + 8a2 = 0

Solving for variable 'a'.

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

Divide each side by '8'.
1 + 0.125a + a2 = 0

Move the constant term to the right:

Add '-1' to each side of the equation.
1 + 0.125a + -1 + a2 = 0 + -1

Reorder the terms:
1 + -1 + 0.125a + a2 = 0 + -1

Combine like terms: 1 + -1 = 0
0 + 0.125a + a2 = 0 + -1
0.125a + a2 = 0 + -1

Combine like terms: 0 + -1 = -1
0.125a + a2 = -1

The a term is 0.125a.  Take half its coefficient (0.0625).
Square it (0.00390625) and add it to both sides.

Add '0.00390625' to each side of the equation.
0.125a + 0.00390625 + a2 = -1 + 0.00390625

Reorder the terms:
0.00390625 + 0.125a + a2 = -1 + 0.00390625

Combine like terms: -1 + 0.00390625 = -0.99609375
0.00390625 + 0.125a + a2 = -0.99609375

Factor a perfect square on the left side:
(a + 0.0625)(a + 0.0625) = -0.99609375

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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