5a^2-6a+7a^2+3a-2+8a+7=

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Solution for 5a^2-6a+7a^2+3a-2+8a+7= equation:


Simplifying
5a2 + -6a + 7a2 + 3a + -2 + 8a + 7 = 0

Reorder the terms:
-2 + 7 + -6a + 3a + 8a + 5a2 + 7a2 = 0

Combine like terms: -2 + 7 = 5
5 + -6a + 3a + 8a + 5a2 + 7a2 = 0

Combine like terms: -6a + 3a = -3a
5 + -3a + 8a + 5a2 + 7a2 = 0

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

Combine like terms: 5a2 + 7a2 = 12a2
5 + 5a + 12a2 = 0

Solving
5 + 5a + 12a2 = 0

Solving for variable 'a'.

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

Divide each side by '12'.
0.4166666667 + 0.4166666667a + a2 = 0

Move the constant term to the right:

Add '-0.4166666667' to each side of the equation.
0.4166666667 + 0.4166666667a + -0.4166666667 + a2 = 0 + -0.4166666667

Reorder the terms:
0.4166666667 + -0.4166666667 + 0.4166666667a + a2 = 0 + -0.4166666667

Combine like terms: 0.4166666667 + -0.4166666667 = 0.0000000000
0.0000000000 + 0.4166666667a + a2 = 0 + -0.4166666667
0.4166666667a + a2 = 0 + -0.4166666667

Combine like terms: 0 + -0.4166666667 = -0.4166666667
0.4166666667a + a2 = -0.4166666667

The a term is 0.4166666667a.  Take half its coefficient (0.2083333334).
Square it (0.04340277781) and add it to both sides.

Add '0.04340277781' to each side of the equation.
0.4166666667a + 0.04340277781 + a2 = -0.4166666667 + 0.04340277781

Reorder the terms:
0.04340277781 + 0.4166666667a + a2 = -0.4166666667 + 0.04340277781

Combine like terms: -0.4166666667 + 0.04340277781 = -0.37326388889
0.04340277781 + 0.4166666667a + a2 = -0.37326388889

Factor a perfect square on the left side:
(a + 0.2083333334)(a + 0.2083333334) = -0.37326388889

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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