4x^2=x^2-.14x+.49

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Solution for 4x^2=x^2-.14x+.49 equation:


Simplifying
4x2 = x2 + -0.14x + 0.49

Reorder the terms:
4x2 = 0.49 + -0.14x + x2

Solving
4x2 = 0.49 + -0.14x + x2

Solving for variable 'x'.

Reorder the terms:
-0.49 + 0.14x + 4x2 + -1x2 = 0.49 + -0.14x + x2 + -0.49 + 0.14x + -1x2

Combine like terms: 4x2 + -1x2 = 3x2
-0.49 + 0.14x + 3x2 = 0.49 + -0.14x + x2 + -0.49 + 0.14x + -1x2

Reorder the terms:
-0.49 + 0.14x + 3x2 = 0.49 + -0.49 + -0.14x + 0.14x + x2 + -1x2

Combine like terms: 0.49 + -0.49 = 0.00
-0.49 + 0.14x + 3x2 = 0.00 + -0.14x + 0.14x + x2 + -1x2
-0.49 + 0.14x + 3x2 = -0.14x + 0.14x + x2 + -1x2

Combine like terms: -0.14x + 0.14x = 0.00
-0.49 + 0.14x + 3x2 = 0.00 + x2 + -1x2
-0.49 + 0.14x + 3x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
-0.49 + 0.14x + 3x2 = 0

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

Divide each side by '3'.
-0.1633333333 + 0.04666666667x + x2 = 0

Move the constant term to the right:

Add '0.1633333333' to each side of the equation.
-0.1633333333 + 0.04666666667x + 0.1633333333 + x2 = 0 + 0.1633333333

Reorder the terms:
-0.1633333333 + 0.1633333333 + 0.04666666667x + x2 = 0 + 0.1633333333

Combine like terms: -0.1633333333 + 0.1633333333 = 0.0000000000
0.0000000000 + 0.04666666667x + x2 = 0 + 0.1633333333
0.04666666667x + x2 = 0 + 0.1633333333

Combine like terms: 0 + 0.1633333333 = 0.1633333333
0.04666666667x + x2 = 0.1633333333

The x term is 0.04666666667x.  Take half its coefficient (0.02333333334).
Square it (0.0005444444448) and add it to both sides.

Add '0.0005444444448' to each side of the equation.
0.04666666667x + 0.0005444444448 + x2 = 0.1633333333 + 0.0005444444448

Reorder the terms:
0.0005444444448 + 0.04666666667x + x2 = 0.1633333333 + 0.0005444444448

Combine like terms: 0.1633333333 + 0.0005444444448 = 0.1638777777448
0.0005444444448 + 0.04666666667x + x2 = 0.1638777777448

Factor a perfect square on the left side:
(x + 0.02333333334)(x + 0.02333333334) = 0.1638777777448

Calculate the square root of the right side: 0.404818203

Break this problem into two subproblems by setting 
(x + 0.02333333334) equal to 0.404818203 and -0.404818203.

Subproblem 1

x + 0.02333333334 = 0.404818203 Simplifying x + 0.02333333334 = 0.404818203 Reorder the terms: 0.02333333334 + x = 0.404818203 Solving 0.02333333334 + x = 0.404818203 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.02333333334' to each side of the equation. 0.02333333334 + -0.02333333334 + x = 0.404818203 + -0.02333333334 Combine like terms: 0.02333333334 + -0.02333333334 = 0.00000000000 0.00000000000 + x = 0.404818203 + -0.02333333334 x = 0.404818203 + -0.02333333334 Combine like terms: 0.404818203 + -0.02333333334 = 0.38148486966 x = 0.38148486966 Simplifying x = 0.38148486966

Subproblem 2

x + 0.02333333334 = -0.404818203 Simplifying x + 0.02333333334 = -0.404818203 Reorder the terms: 0.02333333334 + x = -0.404818203 Solving 0.02333333334 + x = -0.404818203 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.02333333334' to each side of the equation. 0.02333333334 + -0.02333333334 + x = -0.404818203 + -0.02333333334 Combine like terms: 0.02333333334 + -0.02333333334 = 0.00000000000 0.00000000000 + x = -0.404818203 + -0.02333333334 x = -0.404818203 + -0.02333333334 Combine like terms: -0.404818203 + -0.02333333334 = -0.42815153634 x = -0.42815153634 Simplifying x = -0.42815153634

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.38148486966, -0.42815153634}

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