1.5-20x+50x^2=0

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Solution for 1.5-20x+50x^2=0 equation:


Simplifying
1.5 + -20x + 50x2 = 0

Solving
1.5 + -20x + 50x2 = 0

Solving for variable 'x'.

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

Divide each side by '50'.
0.03 + -0.4x + x2 = 0

Move the constant term to the right:

Add '-0.03' to each side of the equation.
0.03 + -0.4x + -0.03 + x2 = 0 + -0.03

Reorder the terms:
0.03 + -0.03 + -0.4x + x2 = 0 + -0.03

Combine like terms: 0.03 + -0.03 = 0.00
0.00 + -0.4x + x2 = 0 + -0.03
-0.4x + x2 = 0 + -0.03

Combine like terms: 0 + -0.03 = -0.03
-0.4x + x2 = -0.03

The x term is -0.4x.  Take half its coefficient (-0.2).
Square it (0.04) and add it to both sides.

Add '0.04' to each side of the equation.
-0.4x + 0.04 + x2 = -0.03 + 0.04

Reorder the terms:
0.04 + -0.4x + x2 = -0.03 + 0.04

Combine like terms: -0.03 + 0.04 = 0.01
0.04 + -0.4x + x2 = 0.01

Factor a perfect square on the left side:
(x + -0.2)(x + -0.2) = 0.01

Calculate the square root of the right side: 0.1

Break this problem into two subproblems by setting 
(x + -0.2) equal to 0.1 and -0.1.

Subproblem 1

x + -0.2 = 0.1 Simplifying x + -0.2 = 0.1 Reorder the terms: -0.2 + x = 0.1 Solving -0.2 + x = 0.1 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.2' to each side of the equation. -0.2 + 0.2 + x = 0.1 + 0.2 Combine like terms: -0.2 + 0.2 = 0.0 0.0 + x = 0.1 + 0.2 x = 0.1 + 0.2 Combine like terms: 0.1 + 0.2 = 0.3 x = 0.3 Simplifying x = 0.3

Subproblem 2

x + -0.2 = -0.1 Simplifying x + -0.2 = -0.1 Reorder the terms: -0.2 + x = -0.1 Solving -0.2 + x = -0.1 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.2' to each side of the equation. -0.2 + 0.2 + x = -0.1 + 0.2 Combine like terms: -0.2 + 0.2 = 0.0 0.0 + x = -0.1 + 0.2 x = -0.1 + 0.2 Combine like terms: -0.1 + 0.2 = 0.1 x = 0.1 Simplifying x = 0.1

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.3, 0.1}

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