3x^2+5x+343=0

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Solution for 3x^2+5x+343=0 equation:


Simplifying
3x2 + 5x + 343 = 0

Reorder the terms:
343 + 5x + 3x2 = 0

Solving
343 + 5x + 3x2 = 0

Solving for variable 'x'.

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

Divide each side by '3'.
114.3333333 + 1.666666667x + x2 = 0

Move the constant term to the right:

Add '-114.3333333' to each side of the equation.
114.3333333 + 1.666666667x + -114.3333333 + x2 = 0 + -114.3333333

Reorder the terms:
114.3333333 + -114.3333333 + 1.666666667x + x2 = 0 + -114.3333333

Combine like terms: 114.3333333 + -114.3333333 = 0.0000000
0.0000000 + 1.666666667x + x2 = 0 + -114.3333333
1.666666667x + x2 = 0 + -114.3333333

Combine like terms: 0 + -114.3333333 = -114.3333333
1.666666667x + x2 = -114.3333333

The x term is 1.666666667x.  Take half its coefficient (0.8333333335).
Square it (0.6944444447) and add it to both sides.

Add '0.6944444447' to each side of the equation.
1.666666667x + 0.6944444447 + x2 = -114.3333333 + 0.6944444447

Reorder the terms:
0.6944444447 + 1.666666667x + x2 = -114.3333333 + 0.6944444447

Combine like terms: -114.3333333 + 0.6944444447 = -113.6388888553
0.6944444447 + 1.666666667x + x2 = -113.6388888553

Factor a perfect square on the left side:
(x + 0.8333333335)(x + 0.8333333335) = -113.6388888553

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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