5x(5x)-50x+15=0

Solution for 5x(5x)-50x+15=0 equation:

Simplifying
5x(5x) + -50x + 15 = 0

Remove parenthesis around (5x)
5x * 5x + -50x + 15 = 0

Reorder the terms for easier multiplication:
5 * 5x * x + -50x + 15 = 0

Multiply 5 * 5
25x * x + -50x + 15 = 0

Multiply x * x
25x2 + -50x + 15 = 0

Reorder the terms:
15 + -50x + 25x2 = 0

Solving
15 + -50x + 25x2 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '5'.
5(3 + -10x + 5x2) = 0

Ignore the factor 5.
Subproblem 1
Set the factor '(3 + -10x + 5x2)' equal to zero and attempt to solve:

Simplifying
3 + -10x + 5x2 = 0

Solving
3 + -10x + 5x2 = 0

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

Divide each side by '5'.
0.6 + -2x + x2 = 0

Move the constant term to the right:

Add '-0.6' to each side of the equation.
0.6 + -2x + -0.6 + x2 = 0 + -0.6

Reorder the terms:
0.6 + -0.6 + -2x + x2 = 0 + -0.6

Combine like terms: 0.6 + -0.6 = 0.0
0.0 + -2x + x2 = 0 + -0.6
-2x + x2 = 0 + -0.6

Combine like terms: 0 + -0.6 = -0.6
-2x + x2 = -0.6

The x term is -2x.  Take half its coefficient (-1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
-2x + 1 + x2 = -0.6 + 1

Reorder the terms:
1 + -2x + x2 = -0.6 + 1

Combine like terms: -0.6 + 1 = 0.4
1 + -2x + x2 = 0.4

Factor a perfect square on the left side:
(x + -1)(x + -1) = 0.4

Calculate the square root of the right side: 0.632455532

Break this problem into two subproblems by setting 
(x + -1) equal to 0.632455532 and -0.632455532.

Subproblem 1
x + -1 = 0.632455532

Simplifying
x + -1 = 0.632455532

Reorder the terms:
-1 + x = 0.632455532

Solving
-1 + x = 0.632455532

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '1' to each side of the equation.
-1 + 1 + x = 0.632455532 + 1

Combine like terms: -1 + 1 = 0
0 + x = 0.632455532 + 1
x = 0.632455532 + 1

Combine like terms: 0.632455532 + 1 = 1.632455532
x = 1.632455532

Simplifying
x = 1.632455532

Subproblem 2
x + -1 = -0.632455532

Simplifying
x + -1 = -0.632455532

Reorder the terms:
-1 + x = -0.632455532

Solving
-1 + x = -0.632455532

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '1' to each side of the equation.
-1 + 1 + x = -0.632455532 + 1

Combine like terms: -1 + 1 = 0
0 + x = -0.632455532 + 1
x = -0.632455532 + 1

Combine like terms: -0.632455532 + 1 = 0.367544468
x = 0.367544468

Simplifying
x = 0.367544468

Solution
The solution to the problem is based on the solutions
from the subproblems.
x = {1.632455532, 0.367544468}
Solution
x = {1.632455532, 0.367544468}