47.1=.0289-4x^2-.34x

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Solution for 47.1=.0289-4x^2-.34x equation:


Simplifying
47.1 = 0.0289 + -4x2 + -0.34x

Reorder the terms:
47.1 = 0.0289 + -0.34x + -4x2

Solving
47.1 = 0.0289 + -0.34x + -4x2

Solving for variable 'x'.

Combine like terms: 47.1 + -0.0289 = 47.0711
47.0711 + 0.34x + 4x2 = 0.0289 + -0.34x + -4x2 + -0.0289 + 0.34x + 4x2

Reorder the terms:
47.0711 + 0.34x + 4x2 = 0.0289 + -0.0289 + -0.34x + 0.34x + -4x2 + 4x2

Combine like terms: 0.0289 + -0.0289 = 0.0000
47.0711 + 0.34x + 4x2 = 0.0000 + -0.34x + 0.34x + -4x2 + 4x2
47.0711 + 0.34x + 4x2 = -0.34x + 0.34x + -4x2 + 4x2

Combine like terms: -0.34x + 0.34x = 0.00
47.0711 + 0.34x + 4x2 = 0.00 + -4x2 + 4x2
47.0711 + 0.34x + 4x2 = -4x2 + 4x2

Combine like terms: -4x2 + 4x2 = 0
47.0711 + 0.34x + 4x2 = 0

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

Divide each side by '4'.
11.767775 + 0.085x + x2 = 0

Move the constant term to the right:

Add '-11.767775' to each side of the equation.
11.767775 + 0.085x + -11.767775 + x2 = 0 + -11.767775

Reorder the terms:
11.767775 + -11.767775 + 0.085x + x2 = 0 + -11.767775

Combine like terms: 11.767775 + -11.767775 = 0.000000
0.000000 + 0.085x + x2 = 0 + -11.767775
0.085x + x2 = 0 + -11.767775

Combine like terms: 0 + -11.767775 = -11.767775
0.085x + x2 = -11.767775

The x term is 0.085x.  Take half its coefficient (0.0425).
Square it (0.00180625) and add it to both sides.

Add '0.00180625' to each side of the equation.
0.085x + 0.00180625 + x2 = -11.767775 + 0.00180625

Reorder the terms:
0.00180625 + 0.085x + x2 = -11.767775 + 0.00180625

Combine like terms: -11.767775 + 0.00180625 = -11.76596875
0.00180625 + 0.085x + x2 = -11.76596875

Factor a perfect square on the left side:
(x + 0.0425)(x + 0.0425) = -11.76596875

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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