49x^2+14x+1=3

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Solution for 49x^2+14x+1=3 equation:


Simplifying
49x2 + 14x + 1 = 3

Reorder the terms:
1 + 14x + 49x2 = 3

Solving
1 + 14x + 49x2 = 3

Solving for variable 'x'.

Reorder the terms:
1 + -3 + 14x + 49x2 = 3 + -3

Combine like terms: 1 + -3 = -2
-2 + 14x + 49x2 = 3 + -3

Combine like terms: 3 + -3 = 0
-2 + 14x + 49x2 = 0

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

Divide each side by '49'.
-0.04081632653 + 0.2857142857x + x2 = 0

Move the constant term to the right:

Add '0.04081632653' to each side of the equation.
-0.04081632653 + 0.2857142857x + 0.04081632653 + x2 = 0 + 0.04081632653

Reorder the terms:
-0.04081632653 + 0.04081632653 + 0.2857142857x + x2 = 0 + 0.04081632653

Combine like terms: -0.04081632653 + 0.04081632653 = 0.00000000000
0.00000000000 + 0.2857142857x + x2 = 0 + 0.04081632653
0.2857142857x + x2 = 0 + 0.04081632653

Combine like terms: 0 + 0.04081632653 = 0.04081632653
0.2857142857x + x2 = 0.04081632653

The x term is 0.2857142857x.  Take half its coefficient (0.1428571429).
Square it (0.02040816328) and add it to both sides.

Add '0.02040816328' to each side of the equation.
0.2857142857x + 0.02040816328 + x2 = 0.04081632653 + 0.02040816328

Reorder the terms:
0.02040816328 + 0.2857142857x + x2 = 0.04081632653 + 0.02040816328

Combine like terms: 0.04081632653 + 0.02040816328 = 0.06122448981
0.02040816328 + 0.2857142857x + x2 = 0.06122448981

Factor a perfect square on the left side:
(x + 0.1428571429)(x + 0.1428571429) = 0.06122448981

Calculate the square root of the right side: 0.24743583

Break this problem into two subproblems by setting 
(x + 0.1428571429) equal to 0.24743583 and -0.24743583.

Subproblem 1

x + 0.1428571429 = 0.24743583 Simplifying x + 0.1428571429 = 0.24743583 Reorder the terms: 0.1428571429 + x = 0.24743583 Solving 0.1428571429 + x = 0.24743583 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.1428571429' to each side of the equation. 0.1428571429 + -0.1428571429 + x = 0.24743583 + -0.1428571429 Combine like terms: 0.1428571429 + -0.1428571429 = 0.0000000000 0.0000000000 + x = 0.24743583 + -0.1428571429 x = 0.24743583 + -0.1428571429 Combine like terms: 0.24743583 + -0.1428571429 = 0.1045786871 x = 0.1045786871 Simplifying x = 0.1045786871

Subproblem 2

x + 0.1428571429 = -0.24743583 Simplifying x + 0.1428571429 = -0.24743583 Reorder the terms: 0.1428571429 + x = -0.24743583 Solving 0.1428571429 + x = -0.24743583 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.1428571429' to each side of the equation. 0.1428571429 + -0.1428571429 + x = -0.24743583 + -0.1428571429 Combine like terms: 0.1428571429 + -0.1428571429 = 0.0000000000 0.0000000000 + x = -0.24743583 + -0.1428571429 x = -0.24743583 + -0.1428571429 Combine like terms: -0.24743583 + -0.1428571429 = -0.3902929729 x = -0.3902929729 Simplifying x = -0.3902929729

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.1045786871, -0.3902929729}

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