x*x+150x-15=0

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Solution for x*x+150x-15=0 equation:


Simplifying
x * x + 150x + -15 = 0

Multiply x * x
x2 + 150x + -15 = 0

Reorder the terms:
-15 + 150x + x2 = 0

Solving
-15 + 150x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '15' to each side of the equation.
-15 + 150x + 15 + x2 = 0 + 15

Reorder the terms:
-15 + 15 + 150x + x2 = 0 + 15

Combine like terms: -15 + 15 = 0
0 + 150x + x2 = 0 + 15
150x + x2 = 0 + 15

Combine like terms: 0 + 15 = 15
150x + x2 = 15

The x term is 150x.  Take half its coefficient (75).
Square it (5625) and add it to both sides.

Add '5625' to each side of the equation.
150x + 5625 + x2 = 15 + 5625

Reorder the terms:
5625 + 150x + x2 = 15 + 5625

Combine like terms: 15 + 5625 = 5640
5625 + 150x + x2 = 5640

Factor a perfect square on the left side:
(x + 75)(x + 75) = 5640

Calculate the square root of the right side: 75.099933422

Break this problem into two subproblems by setting 
(x + 75) equal to 75.099933422 and -75.099933422.

Subproblem 1

x + 75 = 75.099933422 Simplifying x + 75 = 75.099933422 Reorder the terms: 75 + x = 75.099933422 Solving 75 + x = 75.099933422 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-75' to each side of the equation. 75 + -75 + x = 75.099933422 + -75 Combine like terms: 75 + -75 = 0 0 + x = 75.099933422 + -75 x = 75.099933422 + -75 Combine like terms: 75.099933422 + -75 = 0.099933422 x = 0.099933422 Simplifying x = 0.099933422

Subproblem 2

x + 75 = -75.099933422 Simplifying x + 75 = -75.099933422 Reorder the terms: 75 + x = -75.099933422 Solving 75 + x = -75.099933422 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-75' to each side of the equation. 75 + -75 + x = -75.099933422 + -75 Combine like terms: 75 + -75 = 0 0 + x = -75.099933422 + -75 x = -75.099933422 + -75 Combine like terms: -75.099933422 + -75 = -150.099933422 x = -150.099933422 Simplifying x = -150.099933422

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.099933422, -150.099933422}

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