196x^2+49x+2=0

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Solution for 196x^2+49x+2=0 equation:


Simplifying
196x2 + 49x + 2 = 0

Reorder the terms:
2 + 49x + 196x2 = 0

Solving
2 + 49x + 196x2 = 0

Solving for variable 'x'.

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

Divide each side by '196'.
0.01020408163 + 0.25x + x2 = 0

Move the constant term to the right:

Add '-0.01020408163' to each side of the equation.
0.01020408163 + 0.25x + -0.01020408163 + x2 = 0 + -0.01020408163

Reorder the terms:
0.01020408163 + -0.01020408163 + 0.25x + x2 = 0 + -0.01020408163

Combine like terms: 0.01020408163 + -0.01020408163 = 0.00000000000
0.00000000000 + 0.25x + x2 = 0 + -0.01020408163
0.25x + x2 = 0 + -0.01020408163

Combine like terms: 0 + -0.01020408163 = -0.01020408163
0.25x + x2 = -0.01020408163

The x term is 0.25x.  Take half its coefficient (0.125).
Square it (0.015625) and add it to both sides.

Add '0.015625' to each side of the equation.
0.25x + 0.015625 + x2 = -0.01020408163 + 0.015625

Reorder the terms:
0.015625 + 0.25x + x2 = -0.01020408163 + 0.015625

Combine like terms: -0.01020408163 + 0.015625 = 0.00542091837
0.015625 + 0.25x + x2 = 0.00542091837

Factor a perfect square on the left side:
(x + 0.125)(x + 0.125) = 0.00542091837

Calculate the square root of the right side: 0.073626886

Break this problem into two subproblems by setting 
(x + 0.125) equal to 0.073626886 and -0.073626886.

Subproblem 1

x + 0.125 = 0.073626886 Simplifying x + 0.125 = 0.073626886 Reorder the terms: 0.125 + x = 0.073626886 Solving 0.125 + x = 0.073626886 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.125' to each side of the equation. 0.125 + -0.125 + x = 0.073626886 + -0.125 Combine like terms: 0.125 + -0.125 = 0.000 0.000 + x = 0.073626886 + -0.125 x = 0.073626886 + -0.125 Combine like terms: 0.073626886 + -0.125 = -0.051373114 x = -0.051373114 Simplifying x = -0.051373114

Subproblem 2

x + 0.125 = -0.073626886 Simplifying x + 0.125 = -0.073626886 Reorder the terms: 0.125 + x = -0.073626886 Solving 0.125 + x = -0.073626886 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.125' to each side of the equation. 0.125 + -0.125 + x = -0.073626886 + -0.125 Combine like terms: 0.125 + -0.125 = 0.000 0.000 + x = -0.073626886 + -0.125 x = -0.073626886 + -0.125 Combine like terms: -0.073626886 + -0.125 = -0.198626886 x = -0.198626886 Simplifying x = -0.198626886

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-0.051373114, -0.198626886}

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