4x^2-6x+0.69=0

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Solution for 4x^2-6x+0.69=0 equation:


Simplifying
4x2 + -6x + 0.69 = 0

Reorder the terms:
0.69 + -6x + 4x2 = 0

Solving
0.69 + -6x + 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'.
0.1725 + -1.5x + x2 = 0

Move the constant term to the right:

Add '-0.1725' to each side of the equation.
0.1725 + -1.5x + -0.1725 + x2 = 0 + -0.1725

Reorder the terms:
0.1725 + -0.1725 + -1.5x + x2 = 0 + -0.1725

Combine like terms: 0.1725 + -0.1725 = 0.0000
0.0000 + -1.5x + x2 = 0 + -0.1725
-1.5x + x2 = 0 + -0.1725

Combine like terms: 0 + -0.1725 = -0.1725
-1.5x + x2 = -0.1725

The x term is -1.5x.  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.
-1.5x + 0.5625 + x2 = -0.1725 + 0.5625

Reorder the terms:
0.5625 + -1.5x + x2 = -0.1725 + 0.5625

Combine like terms: -0.1725 + 0.5625 = 0.39
0.5625 + -1.5x + x2 = 0.39

Factor a perfect square on the left side:
(x + -0.75)(x + -0.75) = 0.39

Calculate the square root of the right side: 0.6244998

Break this problem into two subproblems by setting 
(x + -0.75) equal to 0.6244998 and -0.6244998.

Subproblem 1

x + -0.75 = 0.6244998 Simplifying x + -0.75 = 0.6244998 Reorder the terms: -0.75 + x = 0.6244998 Solving -0.75 + x = 0.6244998 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.75' to each side of the equation. -0.75 + 0.75 + x = 0.6244998 + 0.75 Combine like terms: -0.75 + 0.75 = 0.00 0.00 + x = 0.6244998 + 0.75 x = 0.6244998 + 0.75 Combine like terms: 0.6244998 + 0.75 = 1.3744998 x = 1.3744998 Simplifying x = 1.3744998

Subproblem 2

x + -0.75 = -0.6244998 Simplifying x + -0.75 = -0.6244998 Reorder the terms: -0.75 + x = -0.6244998 Solving -0.75 + x = -0.6244998 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.75' to each side of the equation. -0.75 + 0.75 + x = -0.6244998 + 0.75 Combine like terms: -0.75 + 0.75 = 0.00 0.00 + x = -0.6244998 + 0.75 x = -0.6244998 + 0.75 Combine like terms: -0.6244998 + 0.75 = 0.1255002 x = 0.1255002 Simplifying x = 0.1255002

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.3744998, 0.1255002}

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