4x^2-29x-12=0

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Solution for 4x^2-29x-12=0 equation:


Simplifying
4x2 + -29x + -12 = 0

Reorder the terms:
-12 + -29x + 4x2 = 0

Solving
-12 + -29x + 4x2 = 0

Solving for variable 'x'.

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

Divide each side by '4'.
-3 + -7.25x + x2 = 0

Move the constant term to the right:

Add '3' to each side of the equation.
-3 + -7.25x + 3 + x2 = 0 + 3

Reorder the terms:
-3 + 3 + -7.25x + x2 = 0 + 3

Combine like terms: -3 + 3 = 0
0 + -7.25x + x2 = 0 + 3
-7.25x + x2 = 0 + 3

Combine like terms: 0 + 3 = 3
-7.25x + x2 = 3

The x term is -7.25x.  Take half its coefficient (-3.625).
Square it (13.140625) and add it to both sides.

Add '13.140625' to each side of the equation.
-7.25x + 13.140625 + x2 = 3 + 13.140625

Reorder the terms:
13.140625 + -7.25x + x2 = 3 + 13.140625

Combine like terms: 3 + 13.140625 = 16.140625
13.140625 + -7.25x + x2 = 16.140625

Factor a perfect square on the left side:
(x + -3.625)(x + -3.625) = 16.140625

Calculate the square root of the right side: 4.01753967

Break this problem into two subproblems by setting 
(x + -3.625) equal to 4.01753967 and -4.01753967.

Subproblem 1

x + -3.625 = 4.01753967 Simplifying x + -3.625 = 4.01753967 Reorder the terms: -3.625 + x = 4.01753967 Solving -3.625 + x = 4.01753967 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3.625' to each side of the equation. -3.625 + 3.625 + x = 4.01753967 + 3.625 Combine like terms: -3.625 + 3.625 = 0.000 0.000 + x = 4.01753967 + 3.625 x = 4.01753967 + 3.625 Combine like terms: 4.01753967 + 3.625 = 7.64253967 x = 7.64253967 Simplifying x = 7.64253967

Subproblem 2

x + -3.625 = -4.01753967 Simplifying x + -3.625 = -4.01753967 Reorder the terms: -3.625 + x = -4.01753967 Solving -3.625 + x = -4.01753967 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3.625' to each side of the equation. -3.625 + 3.625 + x = -4.01753967 + 3.625 Combine like terms: -3.625 + 3.625 = 0.000 0.000 + x = -4.01753967 + 3.625 x = -4.01753967 + 3.625 Combine like terms: -4.01753967 + 3.625 = -0.39253967 x = -0.39253967 Simplifying x = -0.39253967

Solution

The solution to the problem is based on the solutions from the subproblems. x = {7.64253967, -0.39253967}

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