0=4x^2-29x-25

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Solution for 0=4x^2-29x-25 equation:


Simplifying
0 = 4x2 + -29x + -25

Reorder the terms:
0 = -25 + -29x + 4x2

Solving
0 = -25 + -29x + 4x2

Solving for variable 'x'.

Combine like terms: 0 + 25 = 25
25 + 29x + -4x2 = -25 + -29x + 4x2 + 25 + 29x + -4x2

Reorder the terms:
25 + 29x + -4x2 = -25 + 25 + -29x + 29x + 4x2 + -4x2

Combine like terms: -25 + 25 = 0
25 + 29x + -4x2 = 0 + -29x + 29x + 4x2 + -4x2
25 + 29x + -4x2 = -29x + 29x + 4x2 + -4x2

Combine like terms: -29x + 29x = 0
25 + 29x + -4x2 = 0 + 4x2 + -4x2
25 + 29x + -4x2 = 4x2 + -4x2

Combine like terms: 4x2 + -4x2 = 0
25 + 29x + -4x2 = 0

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

Divide each side by '-4'.
-6.25 + -7.25x + x2 = 0

Move the constant term to the right:

Add '6.25' to each side of the equation.
-6.25 + -7.25x + 6.25 + x2 = 0 + 6.25

Reorder the terms:
-6.25 + 6.25 + -7.25x + x2 = 0 + 6.25

Combine like terms: -6.25 + 6.25 = 0.00
0.00 + -7.25x + x2 = 0 + 6.25
-7.25x + x2 = 0 + 6.25

Combine like terms: 0 + 6.25 = 6.25
-7.25x + x2 = 6.25

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 = 6.25 + 13.140625

Reorder the terms:
13.140625 + -7.25x + x2 = 6.25 + 13.140625

Combine like terms: 6.25 + 13.140625 = 19.390625
13.140625 + -7.25x + x2 = 19.390625

Factor a perfect square on the left side:
(x + -3.625)(x + -3.625) = 19.390625

Calculate the square root of the right side: 4.403478738

Break this problem into two subproblems by setting 
(x + -3.625) equal to 4.403478738 and -4.403478738.

Subproblem 1

x + -3.625 = 4.403478738 Simplifying x + -3.625 = 4.403478738 Reorder the terms: -3.625 + x = 4.403478738 Solving -3.625 + x = 4.403478738 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 = 4.403478738 + 3.625 Combine like terms: -3.625 + 3.625 = 0.000 0.000 + x = 4.403478738 + 3.625 x = 4.403478738 + 3.625 Combine like terms: 4.403478738 + 3.625 = 8.028478738 x = 8.028478738 Simplifying x = 8.028478738

Subproblem 2

x + -3.625 = -4.403478738 Simplifying x + -3.625 = -4.403478738 Reorder the terms: -3.625 + x = -4.403478738 Solving -3.625 + x = -4.403478738 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 = -4.403478738 + 3.625 Combine like terms: -3.625 + 3.625 = 0.000 0.000 + x = -4.403478738 + 3.625 x = -4.403478738 + 3.625 Combine like terms: -4.403478738 + 3.625 = -0.778478738 x = -0.778478738 Simplifying x = -0.778478738

Solution

The solution to the problem is based on the solutions from the subproblems. x = {8.028478738, -0.778478738}

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