5x^2-32x+47=0

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Solution for 5x^2-32x+47=0 equation:


Simplifying
5x2 + -32x + 47 = 0

Reorder the terms:
47 + -32x + 5x2 = 0

Solving
47 + -32x + 5x2 = 0

Solving for variable 'x'.

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

Divide each side by '5'.
9.4 + -6.4x + x2 = 0

Move the constant term to the right:

Add '-9.4' to each side of the equation.
9.4 + -6.4x + -9.4 + x2 = 0 + -9.4

Reorder the terms:
9.4 + -9.4 + -6.4x + x2 = 0 + -9.4

Combine like terms: 9.4 + -9.4 = 0.0
0.0 + -6.4x + x2 = 0 + -9.4
-6.4x + x2 = 0 + -9.4

Combine like terms: 0 + -9.4 = -9.4
-6.4x + x2 = -9.4

The x term is -6.4x.  Take half its coefficient (-3.2).
Square it (10.24) and add it to both sides.

Add '10.24' to each side of the equation.
-6.4x + 10.24 + x2 = -9.4 + 10.24

Reorder the terms:
10.24 + -6.4x + x2 = -9.4 + 10.24

Combine like terms: -9.4 + 10.24 = 0.84
10.24 + -6.4x + x2 = 0.84

Factor a perfect square on the left side:
(x + -3.2)(x + -3.2) = 0.84

Calculate the square root of the right side: 0.916515139

Break this problem into two subproblems by setting 
(x + -3.2) equal to 0.916515139 and -0.916515139.

Subproblem 1

x + -3.2 = 0.916515139 Simplifying x + -3.2 = 0.916515139 Reorder the terms: -3.2 + x = 0.916515139 Solving -3.2 + x = 0.916515139 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3.2' to each side of the equation. -3.2 + 3.2 + x = 0.916515139 + 3.2 Combine like terms: -3.2 + 3.2 = 0.0 0.0 + x = 0.916515139 + 3.2 x = 0.916515139 + 3.2 Combine like terms: 0.916515139 + 3.2 = 4.116515139 x = 4.116515139 Simplifying x = 4.116515139

Subproblem 2

x + -3.2 = -0.916515139 Simplifying x + -3.2 = -0.916515139 Reorder the terms: -3.2 + x = -0.916515139 Solving -3.2 + x = -0.916515139 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3.2' to each side of the equation. -3.2 + 3.2 + x = -0.916515139 + 3.2 Combine like terms: -3.2 + 3.2 = 0.0 0.0 + x = -0.916515139 + 3.2 x = -0.916515139 + 3.2 Combine like terms: -0.916515139 + 3.2 = 2.283484861 x = 2.283484861 Simplifying x = 2.283484861

Solution

The solution to the problem is based on the solutions from the subproblems. x = {4.116515139, 2.283484861}

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