225x^2+11x-210=0

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Solution for 225x^2+11x-210=0 equation:


Simplifying
225x2 + 11x + -210 = 0

Reorder the terms:
-210 + 11x + 225x2 = 0

Solving
-210 + 11x + 225x2 = 0

Solving for variable 'x'.

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

Divide each side by '225'.
-0.9333333333 + 0.04888888889x + x2 = 0

Move the constant term to the right:

Add '0.9333333333' to each side of the equation.
-0.9333333333 + 0.04888888889x + 0.9333333333 + x2 = 0 + 0.9333333333

Reorder the terms:
-0.9333333333 + 0.9333333333 + 0.04888888889x + x2 = 0 + 0.9333333333

Combine like terms: -0.9333333333 + 0.9333333333 = 0.0000000000
0.0000000000 + 0.04888888889x + x2 = 0 + 0.9333333333
0.04888888889x + x2 = 0 + 0.9333333333

Combine like terms: 0 + 0.9333333333 = 0.9333333333
0.04888888889x + x2 = 0.9333333333

The x term is 0.04888888889x.  Take half its coefficient (0.02444444445).
Square it (0.0005975308645) and add it to both sides.

Add '0.0005975308645' to each side of the equation.
0.04888888889x + 0.0005975308645 + x2 = 0.9333333333 + 0.0005975308645

Reorder the terms:
0.0005975308645 + 0.04888888889x + x2 = 0.9333333333 + 0.0005975308645

Combine like terms: 0.9333333333 + 0.0005975308645 = 0.9339308641645
0.0005975308645 + 0.04888888889x + x2 = 0.9339308641645

Factor a perfect square on the left side:
(x + 0.02444444445)(x + 0.02444444445) = 0.9339308641645

Calculate the square root of the right side: 0.966400985

Break this problem into two subproblems by setting 
(x + 0.02444444445) equal to 0.966400985 and -0.966400985.

Subproblem 1

x + 0.02444444445 = 0.966400985 Simplifying x + 0.02444444445 = 0.966400985 Reorder the terms: 0.02444444445 + x = 0.966400985 Solving 0.02444444445 + x = 0.966400985 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.02444444445' to each side of the equation. 0.02444444445 + -0.02444444445 + x = 0.966400985 + -0.02444444445 Combine like terms: 0.02444444445 + -0.02444444445 = 0.00000000000 0.00000000000 + x = 0.966400985 + -0.02444444445 x = 0.966400985 + -0.02444444445 Combine like terms: 0.966400985 + -0.02444444445 = 0.94195654055 x = 0.94195654055 Simplifying x = 0.94195654055

Subproblem 2

x + 0.02444444445 = -0.966400985 Simplifying x + 0.02444444445 = -0.966400985 Reorder the terms: 0.02444444445 + x = -0.966400985 Solving 0.02444444445 + x = -0.966400985 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.02444444445' to each side of the equation. 0.02444444445 + -0.02444444445 + x = -0.966400985 + -0.02444444445 Combine like terms: 0.02444444445 + -0.02444444445 = 0.00000000000 0.00000000000 + x = -0.966400985 + -0.02444444445 x = -0.966400985 + -0.02444444445 Combine like terms: -0.966400985 + -0.02444444445 = -0.99084542945 x = -0.99084542945 Simplifying x = -0.99084542945

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.94195654055, -0.99084542945}

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