0.5x^2-10x+47=0

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Solution for 0.5x^2-10x+47=0 equation:


Simplifying
0.5x2 + -10x + 47 = 0

Reorder the terms:
47 + -10x + 0.5x2 = 0

Solving
47 + -10x + 0.5x2 = 0

Solving for variable 'x'.

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

Divide each side by '0.5'.
94 + -20x + x2 = 0

Move the constant term to the right:

Add '-94' to each side of the equation.
94 + -20x + -94 + x2 = 0 + -94

Reorder the terms:
94 + -94 + -20x + x2 = 0 + -94

Combine like terms: 94 + -94 = 0
0 + -20x + x2 = 0 + -94
-20x + x2 = 0 + -94

Combine like terms: 0 + -94 = -94
-20x + x2 = -94

The x term is -20x.  Take half its coefficient (-10).
Square it (100) and add it to both sides.

Add '100' to each side of the equation.
-20x + 100 + x2 = -94 + 100

Reorder the terms:
100 + -20x + x2 = -94 + 100

Combine like terms: -94 + 100 = 6
100 + -20x + x2 = 6

Factor a perfect square on the left side:
(x + -10)(x + -10) = 6

Calculate the square root of the right side: 2.449489743

Break this problem into two subproblems by setting 
(x + -10) equal to 2.449489743 and -2.449489743.

Subproblem 1

x + -10 = 2.449489743 Simplifying x + -10 = 2.449489743 Reorder the terms: -10 + x = 2.449489743 Solving -10 + x = 2.449489743 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '10' to each side of the equation. -10 + 10 + x = 2.449489743 + 10 Combine like terms: -10 + 10 = 0 0 + x = 2.449489743 + 10 x = 2.449489743 + 10 Combine like terms: 2.449489743 + 10 = 12.449489743 x = 12.449489743 Simplifying x = 12.449489743

Subproblem 2

x + -10 = -2.449489743 Simplifying x + -10 = -2.449489743 Reorder the terms: -10 + x = -2.449489743 Solving -10 + x = -2.449489743 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '10' to each side of the equation. -10 + 10 + x = -2.449489743 + 10 Combine like terms: -10 + 10 = 0 0 + x = -2.449489743 + 10 x = -2.449489743 + 10 Combine like terms: -2.449489743 + 10 = 7.550510257 x = 7.550510257 Simplifying x = 7.550510257

Solution

The solution to the problem is based on the solutions from the subproblems. x = {12.449489743, 7.550510257}

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