-4=2a^2-3a

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


Simplifying
-4 = 2a2 + -3a

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

Solving
-4 = -3a + 2a2

Solving for variable 'a'.

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

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

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

Begin completing the square.  Divide all terms by
-2 the coefficient of the squared term: 

Divide each side by '-2'.
2 + -1.5a + a2 = 0

Move the constant term to the right:

Add '-2' to each side of the equation.
2 + -1.5a + -2 + a2 = 0 + -2

Reorder the terms:
2 + -2 + -1.5a + a2 = 0 + -2

Combine like terms: 2 + -2 = 0
0 + -1.5a + a2 = 0 + -2
-1.5a + a2 = 0 + -2

Combine like terms: 0 + -2 = -2
-1.5a + a2 = -2

The a term is -1.5a.  Take half its coefficient (-0.75).
Square it (0.5625) and add it to both sides.

Add '0.5625' to each side of the equation.
-1.5a + 0.5625 + a2 = -2 + 0.5625

Reorder the terms:
0.5625 + -1.5a + a2 = -2 + 0.5625

Combine like terms: -2 + 0.5625 = -1.4375
0.5625 + -1.5a + a2 = -1.4375

Factor a perfect square on the left side:
(a + -0.75)(a + -0.75) = -1.4375

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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