x^2-30x-150=0

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Solution for x^2-30x-150=0 equation:


Simplifying
x2 + -30x + -150 = 0

Reorder the terms:
-150 + -30x + x2 = 0

Solving
-150 + -30x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '150' to each side of the equation.
-150 + -30x + 150 + x2 = 0 + 150

Reorder the terms:
-150 + 150 + -30x + x2 = 0 + 150

Combine like terms: -150 + 150 = 0
0 + -30x + x2 = 0 + 150
-30x + x2 = 0 + 150

Combine like terms: 0 + 150 = 150
-30x + x2 = 150

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 = 150 + 225

Reorder the terms:
225 + -30x + x2 = 150 + 225

Combine like terms: 150 + 225 = 375
225 + -30x + x2 = 375

Factor a perfect square on the left side:
(x + -15)(x + -15) = 375

Calculate the square root of the right side: 19.364916731

Break this problem into two subproblems by setting 
(x + -15) equal to 19.364916731 and -19.364916731.

Subproblem 1

x + -15 = 19.364916731 Simplifying x + -15 = 19.364916731 Reorder the terms: -15 + x = 19.364916731 Solving -15 + x = 19.364916731 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 = 19.364916731 + 15 Combine like terms: -15 + 15 = 0 0 + x = 19.364916731 + 15 x = 19.364916731 + 15 Combine like terms: 19.364916731 + 15 = 34.364916731 x = 34.364916731 Simplifying x = 34.364916731

Subproblem 2

x + -15 = -19.364916731 Simplifying x + -15 = -19.364916731 Reorder the terms: -15 + x = -19.364916731 Solving -15 + x = -19.364916731 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 = -19.364916731 + 15 Combine like terms: -15 + 15 = 0 0 + x = -19.364916731 + 15 x = -19.364916731 + 15 Combine like terms: -19.364916731 + 15 = -4.364916731 x = -4.364916731 Simplifying x = -4.364916731

Solution

The solution to the problem is based on the solutions from the subproblems. x = {34.364916731, -4.364916731}

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