4a^2=9a-9

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


Simplifying
4a2 = 9a + -9

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

Solving
4a2 = -9 + 9a

Solving for variable 'a'.

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

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

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

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

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

Divide each side by '4'.
2.25 + -2.25a + a2 = 0

Move the constant term to the right:

Add '-2.25' to each side of the equation.
2.25 + -2.25a + -2.25 + a2 = 0 + -2.25

Reorder the terms:
2.25 + -2.25 + -2.25a + a2 = 0 + -2.25

Combine like terms: 2.25 + -2.25 = 0.00
0.00 + -2.25a + a2 = 0 + -2.25
-2.25a + a2 = 0 + -2.25

Combine like terms: 0 + -2.25 = -2.25
-2.25a + a2 = -2.25

The a term is -2.25a.  Take half its coefficient (-1.125).
Square it (1.265625) and add it to both sides.

Add '1.265625' to each side of the equation.
-2.25a + 1.265625 + a2 = -2.25 + 1.265625

Reorder the terms:
1.265625 + -2.25a + a2 = -2.25 + 1.265625

Combine like terms: -2.25 + 1.265625 = -0.984375
1.265625 + -2.25a + a2 = -0.984375

Factor a perfect square on the left side:
(a + -1.125)(a + -1.125) = -0.984375

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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