x^2-30x+5=0

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Solution for x^2-30x+5=0 equation:


Simplifying
x2 + -30x + 5 = 0

Reorder the terms:
5 + -30x + x2 = 0

Solving
5 + -30x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '-5' to each side of the equation.
5 + -30x + -5 + x2 = 0 + -5

Reorder the terms:
5 + -5 + -30x + x2 = 0 + -5

Combine like terms: 5 + -5 = 0
0 + -30x + x2 = 0 + -5
-30x + x2 = 0 + -5

Combine like terms: 0 + -5 = -5
-30x + x2 = -5

The x term is -30x.  Take half its coefficient (-15).
Square it (225) and add it to both sides.

Add '225' to each side of the equation.
-30x + 225 + x2 = -5 + 225

Reorder the terms:
225 + -30x + x2 = -5 + 225

Combine like terms: -5 + 225 = 220
225 + -30x + x2 = 220

Factor a perfect square on the left side:
(x + -15)(x + -15) = 220

Calculate the square root of the right side: 14.832396974

Break this problem into two subproblems by setting 
(x + -15) equal to 14.832396974 and -14.832396974.

Subproblem 1

x + -15 = 14.832396974 Simplifying x + -15 = 14.832396974 Reorder the terms: -15 + x = 14.832396974 Solving -15 + x = 14.832396974 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '15' to each side of the equation. -15 + 15 + x = 14.832396974 + 15 Combine like terms: -15 + 15 = 0 0 + x = 14.832396974 + 15 x = 14.832396974 + 15 Combine like terms: 14.832396974 + 15 = 29.832396974 x = 29.832396974 Simplifying x = 29.832396974

Subproblem 2

x + -15 = -14.832396974 Simplifying x + -15 = -14.832396974 Reorder the terms: -15 + x = -14.832396974 Solving -15 + x = -14.832396974 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '15' to each side of the equation. -15 + 15 + x = -14.832396974 + 15 Combine like terms: -15 + 15 = 0 0 + x = -14.832396974 + 15 x = -14.832396974 + 15 Combine like terms: -14.832396974 + 15 = 0.167603026 x = 0.167603026 Simplifying x = 0.167603026

Solution

The solution to the problem is based on the solutions from the subproblems. x = {29.832396974, 0.167603026}

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