(8a^2+2a-3)+(-5a^2+4a+7)=

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Solution for (8a^2+2a-3)+(-5a^2+4a+7)= equation:


Simplifying
(8a2 + 2a + -3) + (-5a2 + 4a + 7) = 0

Reorder the terms:
(-3 + 2a + 8a2) + (-5a2 + 4a + 7) = 0

Remove parenthesis around (-3 + 2a + 8a2)
-3 + 2a + 8a2 + (-5a2 + 4a + 7) = 0

Reorder the terms:
-3 + 2a + 8a2 + (7 + 4a + -5a2) = 0

Remove parenthesis around (7 + 4a + -5a2)
-3 + 2a + 8a2 + 7 + 4a + -5a2 = 0

Reorder the terms:
-3 + 7 + 2a + 4a + 8a2 + -5a2 = 0

Combine like terms: -3 + 7 = 4
4 + 2a + 4a + 8a2 + -5a2 = 0

Combine like terms: 2a + 4a = 6a
4 + 6a + 8a2 + -5a2 = 0

Combine like terms: 8a2 + -5a2 = 3a2
4 + 6a + 3a2 = 0

Solving
4 + 6a + 3a2 = 0

Solving for variable 'a'.

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

Divide each side by '3'.
1.333333333 + 2a + a2 = 0

Move the constant term to the right:

Add '-1.333333333' to each side of the equation.
1.333333333 + 2a + -1.333333333 + a2 = 0 + -1.333333333

Reorder the terms:
1.333333333 + -1.333333333 + 2a + a2 = 0 + -1.333333333

Combine like terms: 1.333333333 + -1.333333333 = 0.000000000
0.000000000 + 2a + a2 = 0 + -1.333333333
2a + a2 = 0 + -1.333333333

Combine like terms: 0 + -1.333333333 = -1.333333333
2a + a2 = -1.333333333

The a term is 2a.  Take half its coefficient (1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
2a + 1 + a2 = -1.333333333 + 1

Reorder the terms:
1 + 2a + a2 = -1.333333333 + 1

Combine like terms: -1.333333333 + 1 = -0.333333333
1 + 2a + a2 = -0.333333333

Factor a perfect square on the left side:
(a + 1)(a + 1) = -0.333333333

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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