300x-100=x^2

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Solution for 300x-100=x^2 equation:


Simplifying
300x + -100 = x2

Reorder the terms:
-100 + 300x = x2

Solving
-100 + 300x = x2

Solving for variable 'x'.

Combine like terms: x2 + -1x2 = 0
-100 + 300x + -1x2 = 0

Begin completing the square.  Divide all terms by
-1 the coefficient of the squared term: 

Divide each side by '-1'.
100 + -300x + x2 = 0

Move the constant term to the right:

Add '-100' to each side of the equation.
100 + -300x + -100 + x2 = 0 + -100

Reorder the terms:
100 + -100 + -300x + x2 = 0 + -100

Combine like terms: 100 + -100 = 0
0 + -300x + x2 = 0 + -100
-300x + x2 = 0 + -100

Combine like terms: 0 + -100 = -100
-300x + x2 = -100

The x term is -300x.  Take half its coefficient (-150).
Square it (22500) and add it to both sides.

Add '22500' to each side of the equation.
-300x + 22500 + x2 = -100 + 22500

Reorder the terms:
22500 + -300x + x2 = -100 + 22500

Combine like terms: -100 + 22500 = 22400
22500 + -300x + x2 = 22400

Factor a perfect square on the left side:
(x + -150)(x + -150) = 22400

Calculate the square root of the right side: 149.666295471

Break this problem into two subproblems by setting 
(x + -150) equal to 149.666295471 and -149.666295471.

Subproblem 1

x + -150 = 149.666295471 Simplifying x + -150 = 149.666295471 Reorder the terms: -150 + x = 149.666295471 Solving -150 + x = 149.666295471 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '150' to each side of the equation. -150 + 150 + x = 149.666295471 + 150 Combine like terms: -150 + 150 = 0 0 + x = 149.666295471 + 150 x = 149.666295471 + 150 Combine like terms: 149.666295471 + 150 = 299.666295471 x = 299.666295471 Simplifying x = 299.666295471

Subproblem 2

x + -150 = -149.666295471 Simplifying x + -150 = -149.666295471 Reorder the terms: -150 + x = -149.666295471 Solving -150 + x = -149.666295471 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '150' to each side of the equation. -150 + 150 + x = -149.666295471 + 150 Combine like terms: -150 + 150 = 0 0 + x = -149.666295471 + 150 x = -149.666295471 + 150 Combine like terms: -149.666295471 + 150 = 0.333704529 x = 0.333704529 Simplifying x = 0.333704529

Solution

The solution to the problem is based on the solutions from the subproblems. x = {299.666295471, 0.333704529}

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