49x^2-28x=3

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Solution for 49x^2-28x=3 equation:


Simplifying
49x2 + -28x = 3

Reorder the terms:
-28x + 49x2 = 3

Solving
-28x + 49x2 = 3

Solving for variable 'x'.

Reorder the terms:
-3 + -28x + 49x2 = 3 + -3

Combine like terms: 3 + -3 = 0
-3 + -28x + 49x2 = 0

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

Divide each side by '49'.
-0.0612244898 + -0.5714285714x + x2 = 0

Move the constant term to the right:

Add '0.0612244898' to each side of the equation.
-0.0612244898 + -0.5714285714x + 0.0612244898 + x2 = 0 + 0.0612244898

Reorder the terms:
-0.0612244898 + 0.0612244898 + -0.5714285714x + x2 = 0 + 0.0612244898

Combine like terms: -0.0612244898 + 0.0612244898 = 0.0000000000
0.0000000000 + -0.5714285714x + x2 = 0 + 0.0612244898
-0.5714285714x + x2 = 0 + 0.0612244898

Combine like terms: 0 + 0.0612244898 = 0.0612244898
-0.5714285714x + x2 = 0.0612244898

The x term is -0.5714285714x.  Take half its coefficient (-0.2857142857).
Square it (0.08163265305) and add it to both sides.

Add '0.08163265305' to each side of the equation.
-0.5714285714x + 0.08163265305 + x2 = 0.0612244898 + 0.08163265305

Reorder the terms:
0.08163265305 + -0.5714285714x + x2 = 0.0612244898 + 0.08163265305

Combine like terms: 0.0612244898 + 0.08163265305 = 0.14285714285
0.08163265305 + -0.5714285714x + x2 = 0.14285714285

Factor a perfect square on the left side:
(x + -0.2857142857)(x + -0.2857142857) = 0.14285714285

Calculate the square root of the right side: 0.377964473

Break this problem into two subproblems by setting 
(x + -0.2857142857) equal to 0.377964473 and -0.377964473.

Subproblem 1

x + -0.2857142857 = 0.377964473 Simplifying x + -0.2857142857 = 0.377964473 Reorder the terms: -0.2857142857 + x = 0.377964473 Solving -0.2857142857 + x = 0.377964473 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.2857142857' to each side of the equation. -0.2857142857 + 0.2857142857 + x = 0.377964473 + 0.2857142857 Combine like terms: -0.2857142857 + 0.2857142857 = 0.0000000000 0.0000000000 + x = 0.377964473 + 0.2857142857 x = 0.377964473 + 0.2857142857 Combine like terms: 0.377964473 + 0.2857142857 = 0.6636787587 x = 0.6636787587 Simplifying x = 0.6636787587

Subproblem 2

x + -0.2857142857 = -0.377964473 Simplifying x + -0.2857142857 = -0.377964473 Reorder the terms: -0.2857142857 + x = -0.377964473 Solving -0.2857142857 + x = -0.377964473 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.2857142857' to each side of the equation. -0.2857142857 + 0.2857142857 + x = -0.377964473 + 0.2857142857 Combine like terms: -0.2857142857 + 0.2857142857 = 0.0000000000 0.0000000000 + x = -0.377964473 + 0.2857142857 x = -0.377964473 + 0.2857142857 Combine like terms: -0.377964473 + 0.2857142857 = -0.0922501873 x = -0.0922501873 Simplifying x = -0.0922501873

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.6636787587, -0.0922501873}

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