7x^2-0.4x+0.04=0

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Solution for 7x^2-0.4x+0.04=0 equation:


Simplifying
7x2 + -0.4x + 0.04 = 0

Reorder the terms:
0.04 + -0.4x + 7x2 = 0

Solving
0.04 + -0.4x + 7x2 = 0

Solving for variable 'x'.

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

Divide each side by '7'.
0.005714285714 + -0.05714285714x + x2 = 0

Move the constant term to the right:

Add '-0.005714285714' to each side of the equation.
0.005714285714 + -0.05714285714x + -0.005714285714 + x2 = 0 + -0.005714285714

Reorder the terms:
0.005714285714 + -0.005714285714 + -0.05714285714x + x2 = 0 + -0.005714285714

Combine like terms: 0.005714285714 + -0.005714285714 = 0.000000000000
0.000000000000 + -0.05714285714x + x2 = 0 + -0.005714285714
-0.05714285714x + x2 = 0 + -0.005714285714

Combine like terms: 0 + -0.005714285714 = -0.005714285714
-0.05714285714x + x2 = -0.005714285714

The x term is -0.05714285714x.  Take half its coefficient (-0.02857142857).
Square it (0.0008163265305) and add it to both sides.

Add '0.0008163265305' to each side of the equation.
-0.05714285714x + 0.0008163265305 + x2 = -0.005714285714 + 0.0008163265305

Reorder the terms:
0.0008163265305 + -0.05714285714x + x2 = -0.005714285714 + 0.0008163265305

Combine like terms: -0.005714285714 + 0.0008163265305 = -0.0048979591835
0.0008163265305 + -0.05714285714x + x2 = -0.0048979591835

Factor a perfect square on the left side:
(x + -0.02857142857)(x + -0.02857142857) = -0.0048979591835

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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