49x^2-4=x

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Solution for 49x^2-4=x equation:


Simplifying
49x2 + -4 = x

Reorder the terms:
-4 + 49x2 = x

Solving
-4 + 49x2 = x

Solving for variable 'x'.

Reorder the terms:
-4 + -1x + 49x2 = x + -1x

Combine like terms: x + -1x = 0
-4 + -1x + 49x2 = 0

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

Divide each side by '49'.
-0.08163265306 + -0.02040816327x + x2 = 0

Move the constant term to the right:

Add '0.08163265306' to each side of the equation.
-0.08163265306 + -0.02040816327x + 0.08163265306 + x2 = 0 + 0.08163265306

Reorder the terms:
-0.08163265306 + 0.08163265306 + -0.02040816327x + x2 = 0 + 0.08163265306

Combine like terms: -0.08163265306 + 0.08163265306 = 0.00000000000
0.00000000000 + -0.02040816327x + x2 = 0 + 0.08163265306
-0.02040816327x + x2 = 0 + 0.08163265306

Combine like terms: 0 + 0.08163265306 = 0.08163265306
-0.02040816327x + x2 = 0.08163265306

The x term is -0.02040816327x.  Take half its coefficient (-0.01020408164).
Square it (0.0001041232821) and add it to both sides.

Add '0.0001041232821' to each side of the equation.
-0.02040816327x + 0.0001041232821 + x2 = 0.08163265306 + 0.0001041232821

Reorder the terms:
0.0001041232821 + -0.02040816327x + x2 = 0.08163265306 + 0.0001041232821

Combine like terms: 0.08163265306 + 0.0001041232821 = 0.0817367763421
0.0001041232821 + -0.02040816327x + x2 = 0.0817367763421

Factor a perfect square on the left side:
(x + -0.01020408164)(x + -0.01020408164) = 0.0817367763421

Calculate the square root of the right side: 0.285896443

Break this problem into two subproblems by setting 
(x + -0.01020408164) equal to 0.285896443 and -0.285896443.

Subproblem 1

x + -0.01020408164 = 0.285896443 Simplifying x + -0.01020408164 = 0.285896443 Reorder the terms: -0.01020408164 + x = 0.285896443 Solving -0.01020408164 + x = 0.285896443 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.01020408164' to each side of the equation. -0.01020408164 + 0.01020408164 + x = 0.285896443 + 0.01020408164 Combine like terms: -0.01020408164 + 0.01020408164 = 0.00000000000 0.00000000000 + x = 0.285896443 + 0.01020408164 x = 0.285896443 + 0.01020408164 Combine like terms: 0.285896443 + 0.01020408164 = 0.29610052464 x = 0.29610052464 Simplifying x = 0.29610052464

Subproblem 2

x + -0.01020408164 = -0.285896443 Simplifying x + -0.01020408164 = -0.285896443 Reorder the terms: -0.01020408164 + x = -0.285896443 Solving -0.01020408164 + x = -0.285896443 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.01020408164' to each side of the equation. -0.01020408164 + 0.01020408164 + x = -0.285896443 + 0.01020408164 Combine like terms: -0.01020408164 + 0.01020408164 = 0.00000000000 0.00000000000 + x = -0.285896443 + 0.01020408164 x = -0.285896443 + 0.01020408164 Combine like terms: -0.285896443 + 0.01020408164 = -0.27569236136 x = -0.27569236136 Simplifying x = -0.27569236136

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.29610052464, -0.27569236136}

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