49x^2-31x+4=0

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Solution for 49x^2-31x+4=0 equation:


Simplifying
49x2 + -31x + 4 = 0

Reorder the terms:
4 + -31x + 49x2 = 0

Solving
4 + -31x + 49x2 = 0

Solving for variable 'x'.

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

Divide each side by '49'.
0.08163265306 + -0.6326530612x + x2 = 0

Move the constant term to the right:

Add '-0.08163265306' to each side of the equation.
0.08163265306 + -0.6326530612x + -0.08163265306 + x2 = 0 + -0.08163265306

Reorder the terms:
0.08163265306 + -0.08163265306 + -0.6326530612x + x2 = 0 + -0.08163265306

Combine like terms: 0.08163265306 + -0.08163265306 = 0.00000000000
0.00000000000 + -0.6326530612x + x2 = 0 + -0.08163265306
-0.6326530612x + x2 = 0 + -0.08163265306

Combine like terms: 0 + -0.08163265306 = -0.08163265306
-0.6326530612x + x2 = -0.08163265306

The x term is -0.6326530612x.  Take half its coefficient (-0.3163265306).
Square it (0.1000624740) and add it to both sides.

Add '0.1000624740' to each side of the equation.
-0.6326530612x + 0.1000624740 + x2 = -0.08163265306 + 0.1000624740

Reorder the terms:
0.1000624740 + -0.6326530612x + x2 = -0.08163265306 + 0.1000624740

Combine like terms: -0.08163265306 + 0.1000624740 = 0.01842982094
0.1000624740 + -0.6326530612x + x2 = 0.01842982094

Factor a perfect square on the left side:
(x + -0.3163265306)(x + -0.3163265306) = 0.01842982094

Calculate the square root of the right side: 0.135756477

Break this problem into two subproblems by setting 
(x + -0.3163265306) equal to 0.135756477 and -0.135756477.

Subproblem 1

x + -0.3163265306 = 0.135756477 Simplifying x + -0.3163265306 = 0.135756477 Reorder the terms: -0.3163265306 + x = 0.135756477 Solving -0.3163265306 + x = 0.135756477 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.3163265306' to each side of the equation. -0.3163265306 + 0.3163265306 + x = 0.135756477 + 0.3163265306 Combine like terms: -0.3163265306 + 0.3163265306 = 0.0000000000 0.0000000000 + x = 0.135756477 + 0.3163265306 x = 0.135756477 + 0.3163265306 Combine like terms: 0.135756477 + 0.3163265306 = 0.4520830076 x = 0.4520830076 Simplifying x = 0.4520830076

Subproblem 2

x + -0.3163265306 = -0.135756477 Simplifying x + -0.3163265306 = -0.135756477 Reorder the terms: -0.3163265306 + x = -0.135756477 Solving -0.3163265306 + x = -0.135756477 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.3163265306' to each side of the equation. -0.3163265306 + 0.3163265306 + x = -0.135756477 + 0.3163265306 Combine like terms: -0.3163265306 + 0.3163265306 = 0.0000000000 0.0000000000 + x = -0.135756477 + 0.3163265306 x = -0.135756477 + 0.3163265306 Combine like terms: -0.135756477 + 0.3163265306 = 0.1805700536 x = 0.1805700536 Simplifying x = 0.1805700536

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.4520830076, 0.1805700536}

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