75x^2-30x+2=0

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Solution for 75x^2-30x+2=0 equation:


Simplifying
75x2 + -30x + 2 = 0

Reorder the terms:
2 + -30x + 75x2 = 0

Solving
2 + -30x + 75x2 = 0

Solving for variable 'x'.

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

Divide each side by '75'.
0.02666666667 + -0.4x + x2 = 0

Move the constant term to the right:

Add '-0.02666666667' to each side of the equation.
0.02666666667 + -0.4x + -0.02666666667 + x2 = 0 + -0.02666666667

Reorder the terms:
0.02666666667 + -0.02666666667 + -0.4x + x2 = 0 + -0.02666666667

Combine like terms: 0.02666666667 + -0.02666666667 = 0.00000000000
0.00000000000 + -0.4x + x2 = 0 + -0.02666666667
-0.4x + x2 = 0 + -0.02666666667

Combine like terms: 0 + -0.02666666667 = -0.02666666667
-0.4x + x2 = -0.02666666667

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 = -0.02666666667 + 0.04

Reorder the terms:
0.04 + -0.4x + x2 = -0.02666666667 + 0.04

Combine like terms: -0.02666666667 + 0.04 = 0.01333333333
0.04 + -0.4x + x2 = 0.01333333333

Factor a perfect square on the left side:
(x + -0.2)(x + -0.2) = 0.01333333333

Calculate the square root of the right side: 0.115470054

Break this problem into two subproblems by setting 
(x + -0.2) equal to 0.115470054 and -0.115470054.

Subproblem 1

x + -0.2 = 0.115470054 Simplifying x + -0.2 = 0.115470054 Reorder the terms: -0.2 + x = 0.115470054 Solving -0.2 + x = 0.115470054 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 = 0.115470054 + 0.2 Combine like terms: -0.2 + 0.2 = 0.0 0.0 + x = 0.115470054 + 0.2 x = 0.115470054 + 0.2 Combine like terms: 0.115470054 + 0.2 = 0.315470054 x = 0.315470054 Simplifying x = 0.315470054

Subproblem 2

x + -0.2 = -0.115470054 Simplifying x + -0.2 = -0.115470054 Reorder the terms: -0.2 + x = -0.115470054 Solving -0.2 + x = -0.115470054 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 = -0.115470054 + 0.2 Combine like terms: -0.2 + 0.2 = 0.0 0.0 + x = -0.115470054 + 0.2 x = -0.115470054 + 0.2 Combine like terms: -0.115470054 + 0.2 = 0.084529946 x = 0.084529946 Simplifying x = 0.084529946

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.315470054, 0.084529946}

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