20x^2+7x+3=0

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Solution for 20x^2+7x+3=0 equation:


Simplifying
20x2 + 7x + 3 = 0

Reorder the terms:
3 + 7x + 20x2 = 0

Solving
3 + 7x + 20x2 = 0

Solving for variable 'x'.

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

Divide each side by '20'.
0.15 + 0.35x + x2 = 0

Move the constant term to the right:

Add '-0.15' to each side of the equation.
0.15 + 0.35x + -0.15 + x2 = 0 + -0.15

Reorder the terms:
0.15 + -0.15 + 0.35x + x2 = 0 + -0.15

Combine like terms: 0.15 + -0.15 = 0.00
0.00 + 0.35x + x2 = 0 + -0.15
0.35x + x2 = 0 + -0.15

Combine like terms: 0 + -0.15 = -0.15
0.35x + x2 = -0.15

The x term is 0.35x.  Take half its coefficient (0.175).
Square it (0.030625) and add it to both sides.

Add '0.030625' to each side of the equation.
0.35x + 0.030625 + x2 = -0.15 + 0.030625

Reorder the terms:
0.030625 + 0.35x + x2 = -0.15 + 0.030625

Combine like terms: -0.15 + 0.030625 = -0.119375
0.030625 + 0.35x + x2 = -0.119375

Factor a perfect square on the left side:
(x + 0.175)(x + 0.175) = -0.119375

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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