4x^2-20x+25=32

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Solution for 4x^2-20x+25=32 equation:


Simplifying
4x2 + -20x + 25 = 32

Reorder the terms:
25 + -20x + 4x2 = 32

Solving
25 + -20x + 4x2 = 32

Solving for variable 'x'.

Reorder the terms:
25 + -32 + -20x + 4x2 = 32 + -32

Combine like terms: 25 + -32 = -7
-7 + -20x + 4x2 = 32 + -32

Combine like terms: 32 + -32 = 0
-7 + -20x + 4x2 = 0

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

Divide each side by '4'.
-1.75 + -5x + x2 = 0

Move the constant term to the right:

Add '1.75' to each side of the equation.
-1.75 + -5x + 1.75 + x2 = 0 + 1.75

Reorder the terms:
-1.75 + 1.75 + -5x + x2 = 0 + 1.75

Combine like terms: -1.75 + 1.75 = 0.00
0.00 + -5x + x2 = 0 + 1.75
-5x + x2 = 0 + 1.75

Combine like terms: 0 + 1.75 = 1.75
-5x + x2 = 1.75

The x term is -5x.  Take half its coefficient (-2.5).
Square it (6.25) and add it to both sides.

Add '6.25' to each side of the equation.
-5x + 6.25 + x2 = 1.75 + 6.25

Reorder the terms:
6.25 + -5x + x2 = 1.75 + 6.25

Combine like terms: 1.75 + 6.25 = 8
6.25 + -5x + x2 = 8

Factor a perfect square on the left side:
(x + -2.5)(x + -2.5) = 8

Calculate the square root of the right side: 2.828427125

Break this problem into two subproblems by setting 
(x + -2.5) equal to 2.828427125 and -2.828427125.

Subproblem 1

x + -2.5 = 2.828427125 Simplifying x + -2.5 = 2.828427125 Reorder the terms: -2.5 + x = 2.828427125 Solving -2.5 + x = 2.828427125 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.5' to each side of the equation. -2.5 + 2.5 + x = 2.828427125 + 2.5 Combine like terms: -2.5 + 2.5 = 0.0 0.0 + x = 2.828427125 + 2.5 x = 2.828427125 + 2.5 Combine like terms: 2.828427125 + 2.5 = 5.328427125 x = 5.328427125 Simplifying x = 5.328427125

Subproblem 2

x + -2.5 = -2.828427125 Simplifying x + -2.5 = -2.828427125 Reorder the terms: -2.5 + x = -2.828427125 Solving -2.5 + x = -2.828427125 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.5' to each side of the equation. -2.5 + 2.5 + x = -2.828427125 + 2.5 Combine like terms: -2.5 + 2.5 = 0.0 0.0 + x = -2.828427125 + 2.5 x = -2.828427125 + 2.5 Combine like terms: -2.828427125 + 2.5 = -0.328427125 x = -0.328427125 Simplifying x = -0.328427125

Solution

The solution to the problem is based on the solutions from the subproblems. x = {5.328427125, -0.328427125}

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