x^2-30x-176=0

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Solution for x^2-30x-176=0 equation:


Simplifying
x2 + -30x + -176 = 0

Reorder the terms:
-176 + -30x + x2 = 0

Solving
-176 + -30x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '176' to each side of the equation.
-176 + -30x + 176 + x2 = 0 + 176

Reorder the terms:
-176 + 176 + -30x + x2 = 0 + 176

Combine like terms: -176 + 176 = 0
0 + -30x + x2 = 0 + 176
-30x + x2 = 0 + 176

Combine like terms: 0 + 176 = 176
-30x + x2 = 176

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 = 176 + 225

Reorder the terms:
225 + -30x + x2 = 176 + 225

Combine like terms: 176 + 225 = 401
225 + -30x + x2 = 401

Factor a perfect square on the left side:
(x + -15)(x + -15) = 401

Calculate the square root of the right side: 20.024984395

Break this problem into two subproblems by setting 
(x + -15) equal to 20.024984395 and -20.024984395.

Subproblem 1

x + -15 = 20.024984395 Simplifying x + -15 = 20.024984395 Reorder the terms: -15 + x = 20.024984395 Solving -15 + x = 20.024984395 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 = 20.024984395 + 15 Combine like terms: -15 + 15 = 0 0 + x = 20.024984395 + 15 x = 20.024984395 + 15 Combine like terms: 20.024984395 + 15 = 35.024984395 x = 35.024984395 Simplifying x = 35.024984395

Subproblem 2

x + -15 = -20.024984395 Simplifying x + -15 = -20.024984395 Reorder the terms: -15 + x = -20.024984395 Solving -15 + x = -20.024984395 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 = -20.024984395 + 15 Combine like terms: -15 + 15 = 0 0 + x = -20.024984395 + 15 x = -20.024984395 + 15 Combine like terms: -20.024984395 + 15 = -5.024984395 x = -5.024984395 Simplifying x = -5.024984395

Solution

The solution to the problem is based on the solutions from the subproblems. x = {35.024984395, -5.024984395}

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