3a^2+4a=2a-2a-9

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Solution for 3a^2+4a=2a-2a-9 equation:


Simplifying
3a2 + 4a = 2a + -2a + -9

Reorder the terms:
4a + 3a2 = 2a + -2a + -9

Reorder the terms:
4a + 3a2 = -9 + 2a + -2a

Combine like terms: 2a + -2a = 0
4a + 3a2 = -9 + 0
4a + 3a2 = -9

Solving
4a + 3a2 = -9

Solving for variable 'a'.

Reorder the terms:
9 + 4a + 3a2 = -9 + 9

Combine like terms: -9 + 9 = 0
9 + 4a + 3a2 = 0

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

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

Move the constant term to the right:

Add '-3' to each side of the equation.
3 + 1.333333333a + -3 + a2 = 0 + -3

Reorder the terms:
3 + -3 + 1.333333333a + a2 = 0 + -3

Combine like terms: 3 + -3 = 0
0 + 1.333333333a + a2 = 0 + -3
1.333333333a + a2 = 0 + -3

Combine like terms: 0 + -3 = -3
1.333333333a + a2 = -3

The a term is 1.333333333a.  Take half its coefficient (0.6666666665).
Square it (0.4444444442) and add it to both sides.

Add '0.4444444442' to each side of the equation.
1.333333333a + 0.4444444442 + a2 = -3 + 0.4444444442

Reorder the terms:
0.4444444442 + 1.333333333a + a2 = -3 + 0.4444444442

Combine like terms: -3 + 0.4444444442 = -2.5555555558
0.4444444442 + 1.333333333a + a2 = -2.5555555558

Factor a perfect square on the left side:
(a + 0.6666666665)(a + 0.6666666665) = -2.5555555558

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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