850=x^2+2x+300

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Solution for 850=x^2+2x+300 equation:


Simplifying
850 = x2 + 2x + 300

Reorder the terms:
850 = 300 + 2x + x2

Solving
850 = 300 + 2x + x2

Solving for variable 'x'.

Combine like terms: 850 + -300 = 550
550 + -2x + -1x2 = 300 + 2x + x2 + -300 + -2x + -1x2

Reorder the terms:
550 + -2x + -1x2 = 300 + -300 + 2x + -2x + x2 + -1x2

Combine like terms: 300 + -300 = 0
550 + -2x + -1x2 = 0 + 2x + -2x + x2 + -1x2
550 + -2x + -1x2 = 2x + -2x + x2 + -1x2

Combine like terms: 2x + -2x = 0
550 + -2x + -1x2 = 0 + x2 + -1x2
550 + -2x + -1x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
550 + -2x + -1x2 = 0

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

Divide each side by '-1'.
-550 + 2x + x2 = 0

Move the constant term to the right:

Add '550' to each side of the equation.
-550 + 2x + 550 + x2 = 0 + 550

Reorder the terms:
-550 + 550 + 2x + x2 = 0 + 550

Combine like terms: -550 + 550 = 0
0 + 2x + x2 = 0 + 550
2x + x2 = 0 + 550

Combine like terms: 0 + 550 = 550
2x + x2 = 550

The x term is 2x.  Take half its coefficient (1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
2x + 1 + x2 = 550 + 1

Reorder the terms:
1 + 2x + x2 = 550 + 1

Combine like terms: 550 + 1 = 551
1 + 2x + x2 = 551

Factor a perfect square on the left side:
(x + 1)(x + 1) = 551

Calculate the square root of the right side: 23.473389189

Break this problem into two subproblems by setting 
(x + 1) equal to 23.473389189 and -23.473389189.

Subproblem 1

x + 1 = 23.473389189 Simplifying x + 1 = 23.473389189 Reorder the terms: 1 + x = 23.473389189 Solving 1 + x = 23.473389189 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + x = 23.473389189 + -1 Combine like terms: 1 + -1 = 0 0 + x = 23.473389189 + -1 x = 23.473389189 + -1 Combine like terms: 23.473389189 + -1 = 22.473389189 x = 22.473389189 Simplifying x = 22.473389189

Subproblem 2

x + 1 = -23.473389189 Simplifying x + 1 = -23.473389189 Reorder the terms: 1 + x = -23.473389189 Solving 1 + x = -23.473389189 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + x = -23.473389189 + -1 Combine like terms: 1 + -1 = 0 0 + x = -23.473389189 + -1 x = -23.473389189 + -1 Combine like terms: -23.473389189 + -1 = -24.473389189 x = -24.473389189 Simplifying x = -24.473389189

Solution

The solution to the problem is based on the solutions from the subproblems. x = {22.473389189, -24.473389189}

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