18x^2-32x=65

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Solution for 18x^2-32x=65 equation:


Simplifying
18x2 + -32x = 65

Reorder the terms:
-32x + 18x2 = 65

Solving
-32x + 18x2 = 65

Solving for variable 'x'.

Reorder the terms:
-65 + -32x + 18x2 = 65 + -65

Combine like terms: 65 + -65 = 0
-65 + -32x + 18x2 = 0

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

Divide each side by '18'.
-3.611111111 + -1.777777778x + x2 = 0

Move the constant term to the right:

Add '3.611111111' to each side of the equation.
-3.611111111 + -1.777777778x + 3.611111111 + x2 = 0 + 3.611111111

Reorder the terms:
-3.611111111 + 3.611111111 + -1.777777778x + x2 = 0 + 3.611111111

Combine like terms: -3.611111111 + 3.611111111 = 0.000000000
0.000000000 + -1.777777778x + x2 = 0 + 3.611111111
-1.777777778x + x2 = 0 + 3.611111111

Combine like terms: 0 + 3.611111111 = 3.611111111
-1.777777778x + x2 = 3.611111111

The x term is -1.777777778x.  Take half its coefficient (-0.888888889).
Square it (0.7901234570) and add it to both sides.

Add '0.7901234570' to each side of the equation.
-1.777777778x + 0.7901234570 + x2 = 3.611111111 + 0.7901234570

Reorder the terms:
0.7901234570 + -1.777777778x + x2 = 3.611111111 + 0.7901234570

Combine like terms: 3.611111111 + 0.7901234570 = 4.401234568
0.7901234570 + -1.777777778x + x2 = 4.401234568

Factor a perfect square on the left side:
(x + -0.888888889)(x + -0.888888889) = 4.401234568

Calculate the square root of the right side: 2.097911954

Break this problem into two subproblems by setting 
(x + -0.888888889) equal to 2.097911954 and -2.097911954.

Subproblem 1

x + -0.888888889 = 2.097911954 Simplifying x + -0.888888889 = 2.097911954 Reorder the terms: -0.888888889 + x = 2.097911954 Solving -0.888888889 + x = 2.097911954 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.888888889' to each side of the equation. -0.888888889 + 0.888888889 + x = 2.097911954 + 0.888888889 Combine like terms: -0.888888889 + 0.888888889 = 0.000000000 0.000000000 + x = 2.097911954 + 0.888888889 x = 2.097911954 + 0.888888889 Combine like terms: 2.097911954 + 0.888888889 = 2.986800843 x = 2.986800843 Simplifying x = 2.986800843

Subproblem 2

x + -0.888888889 = -2.097911954 Simplifying x + -0.888888889 = -2.097911954 Reorder the terms: -0.888888889 + x = -2.097911954 Solving -0.888888889 + x = -2.097911954 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.888888889' to each side of the equation. -0.888888889 + 0.888888889 + x = -2.097911954 + 0.888888889 Combine like terms: -0.888888889 + 0.888888889 = 0.000000000 0.000000000 + x = -2.097911954 + 0.888888889 x = -2.097911954 + 0.888888889 Combine like terms: -2.097911954 + 0.888888889 = -1.209023065 x = -1.209023065 Simplifying x = -1.209023065

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.986800843, -1.209023065}

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