4x^2-3x-8=-12

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Solution for 4x^2-3x-8=-12 equation:


Simplifying
4x2 + -3x + -8 = -12

Reorder the terms:
-8 + -3x + 4x2 = -12

Solving
-8 + -3x + 4x2 = -12

Solving for variable 'x'.

Reorder the terms:
-8 + 12 + -3x + 4x2 = -12 + 12

Combine like terms: -8 + 12 = 4
4 + -3x + 4x2 = -12 + 12

Combine like terms: -12 + 12 = 0
4 + -3x + 4x2 = 0

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

Divide each side by '4'.
1 + -0.75x + x2 = 0

Move the constant term to the right:

Add '-1' to each side of the equation.
1 + -0.75x + -1 + x2 = 0 + -1

Reorder the terms:
1 + -1 + -0.75x + x2 = 0 + -1

Combine like terms: 1 + -1 = 0
0 + -0.75x + x2 = 0 + -1
-0.75x + x2 = 0 + -1

Combine like terms: 0 + -1 = -1
-0.75x + x2 = -1

The x term is -0.75x.  Take half its coefficient (-0.375).
Square it (0.140625) and add it to both sides.

Add '0.140625' to each side of the equation.
-0.75x + 0.140625 + x2 = -1 + 0.140625

Reorder the terms:
0.140625 + -0.75x + x2 = -1 + 0.140625

Combine like terms: -1 + 0.140625 = -0.859375
0.140625 + -0.75x + x2 = -0.859375

Factor a perfect square on the left side:
(x + -0.375)(x + -0.375) = -0.859375

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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