11x^2-2x+9=62

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Solution for 11x^2-2x+9=62 equation:


Simplifying
11x2 + -2x + 9 = 62

Reorder the terms:
9 + -2x + 11x2 = 62

Solving
9 + -2x + 11x2 = 62

Solving for variable 'x'.

Reorder the terms:
9 + -62 + -2x + 11x2 = 62 + -62

Combine like terms: 9 + -62 = -53
-53 + -2x + 11x2 = 62 + -62

Combine like terms: 62 + -62 = 0
-53 + -2x + 11x2 = 0

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

Divide each side by '11'.
-4.818181818 + -0.1818181818x + x2 = 0

Move the constant term to the right:

Add '4.818181818' to each side of the equation.
-4.818181818 + -0.1818181818x + 4.818181818 + x2 = 0 + 4.818181818

Reorder the terms:
-4.818181818 + 4.818181818 + -0.1818181818x + x2 = 0 + 4.818181818

Combine like terms: -4.818181818 + 4.818181818 = 0.000000000
0.000000000 + -0.1818181818x + x2 = 0 + 4.818181818
-0.1818181818x + x2 = 0 + 4.818181818

Combine like terms: 0 + 4.818181818 = 4.818181818
-0.1818181818x + x2 = 4.818181818

The x term is -0.1818181818x.  Take half its coefficient (-0.0909090909).
Square it (0.008264462808) and add it to both sides.

Add '0.008264462808' to each side of the equation.
-0.1818181818x + 0.008264462808 + x2 = 4.818181818 + 0.008264462808

Reorder the terms:
0.008264462808 + -0.1818181818x + x2 = 4.818181818 + 0.008264462808

Combine like terms: 4.818181818 + 0.008264462808 = 4.826446280808
0.008264462808 + -0.1818181818x + x2 = 4.826446280808

Factor a perfect square on the left side:
(x + -0.0909090909)(x + -0.0909090909) = 4.826446280808

Calculate the square root of the right side: 2.19691745

Break this problem into two subproblems by setting 
(x + -0.0909090909) equal to 2.19691745 and -2.19691745.

Subproblem 1

x + -0.0909090909 = 2.19691745 Simplifying x + -0.0909090909 = 2.19691745 Reorder the terms: -0.0909090909 + x = 2.19691745 Solving -0.0909090909 + x = 2.19691745 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.0909090909' to each side of the equation. -0.0909090909 + 0.0909090909 + x = 2.19691745 + 0.0909090909 Combine like terms: -0.0909090909 + 0.0909090909 = 0.0000000000 0.0000000000 + x = 2.19691745 + 0.0909090909 x = 2.19691745 + 0.0909090909 Combine like terms: 2.19691745 + 0.0909090909 = 2.2878265409 x = 2.2878265409 Simplifying x = 2.2878265409

Subproblem 2

x + -0.0909090909 = -2.19691745 Simplifying x + -0.0909090909 = -2.19691745 Reorder the terms: -0.0909090909 + x = -2.19691745 Solving -0.0909090909 + x = -2.19691745 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.0909090909' to each side of the equation. -0.0909090909 + 0.0909090909 + x = -2.19691745 + 0.0909090909 Combine like terms: -0.0909090909 + 0.0909090909 = 0.0000000000 0.0000000000 + x = -2.19691745 + 0.0909090909 x = -2.19691745 + 0.0909090909 Combine like terms: -2.19691745 + 0.0909090909 = -2.1060083591 x = -2.1060083591 Simplifying x = -2.1060083591

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.2878265409, -2.1060083591}

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