50=3x^2+4.7x+10.3

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Solution for 50=3x^2+4.7x+10.3 equation:


Simplifying
50 = 3x2 + 4.7x + 10.3

Reorder the terms:
50 = 10.3 + 4.7x + 3x2

Solving
50 = 10.3 + 4.7x + 3x2

Solving for variable 'x'.

Combine like terms: 50 + -10.3 = 39.7
39.7 + -4.7x + -3x2 = 10.3 + 4.7x + 3x2 + -10.3 + -4.7x + -3x2

Reorder the terms:
39.7 + -4.7x + -3x2 = 10.3 + -10.3 + 4.7x + -4.7x + 3x2 + -3x2

Combine like terms: 10.3 + -10.3 = 0.0
39.7 + -4.7x + -3x2 = 0.0 + 4.7x + -4.7x + 3x2 + -3x2
39.7 + -4.7x + -3x2 = 4.7x + -4.7x + 3x2 + -3x2

Combine like terms: 4.7x + -4.7x = 0.0
39.7 + -4.7x + -3x2 = 0.0 + 3x2 + -3x2
39.7 + -4.7x + -3x2 = 3x2 + -3x2

Combine like terms: 3x2 + -3x2 = 0
39.7 + -4.7x + -3x2 = 0

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

Divide each side by '-3'.
-13.23333333 + 1.566666667x + x2 = 0

Move the constant term to the right:

Add '13.23333333' to each side of the equation.
-13.23333333 + 1.566666667x + 13.23333333 + x2 = 0 + 13.23333333

Reorder the terms:
-13.23333333 + 13.23333333 + 1.566666667x + x2 = 0 + 13.23333333

Combine like terms: -13.23333333 + 13.23333333 = 0.00000000
0.00000000 + 1.566666667x + x2 = 0 + 13.23333333
1.566666667x + x2 = 0 + 13.23333333

Combine like terms: 0 + 13.23333333 = 13.23333333
1.566666667x + x2 = 13.23333333

The x term is 1.566666667x.  Take half its coefficient (0.7833333335).
Square it (0.6136111114) and add it to both sides.

Add '0.6136111114' to each side of the equation.
1.566666667x + 0.6136111114 + x2 = 13.23333333 + 0.6136111114

Reorder the terms:
0.6136111114 + 1.566666667x + x2 = 13.23333333 + 0.6136111114

Combine like terms: 13.23333333 + 0.6136111114 = 13.8469444414
0.6136111114 + 1.566666667x + x2 = 13.8469444414

Factor a perfect square on the left side:
(x + 0.7833333335)(x + 0.7833333335) = 13.8469444414

Calculate the square root of the right side: 3.721148269

Break this problem into two subproblems by setting 
(x + 0.7833333335) equal to 3.721148269 and -3.721148269.

Subproblem 1

x + 0.7833333335 = 3.721148269 Simplifying x + 0.7833333335 = 3.721148269 Reorder the terms: 0.7833333335 + x = 3.721148269 Solving 0.7833333335 + x = 3.721148269 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.7833333335' to each side of the equation. 0.7833333335 + -0.7833333335 + x = 3.721148269 + -0.7833333335 Combine like terms: 0.7833333335 + -0.7833333335 = 0.0000000000 0.0000000000 + x = 3.721148269 + -0.7833333335 x = 3.721148269 + -0.7833333335 Combine like terms: 3.721148269 + -0.7833333335 = 2.9378149355 x = 2.9378149355 Simplifying x = 2.9378149355

Subproblem 2

x + 0.7833333335 = -3.721148269 Simplifying x + 0.7833333335 = -3.721148269 Reorder the terms: 0.7833333335 + x = -3.721148269 Solving 0.7833333335 + x = -3.721148269 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.7833333335' to each side of the equation. 0.7833333335 + -0.7833333335 + x = -3.721148269 + -0.7833333335 Combine like terms: 0.7833333335 + -0.7833333335 = 0.0000000000 0.0000000000 + x = -3.721148269 + -0.7833333335 x = -3.721148269 + -0.7833333335 Combine like terms: -3.721148269 + -0.7833333335 = -4.5044816025 x = -4.5044816025 Simplifying x = -4.5044816025

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.9378149355, -4.5044816025}

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