y^2-22y=-23

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Solution for y^2-22y=-23 equation:


Simplifying
y2 + -22y = -23

Reorder the terms:
-22y + y2 = -23

Solving
-22y + y2 = -23

Solving for variable 'y'.

Reorder the terms:
23 + -22y + y2 = -23 + 23

Combine like terms: -23 + 23 = 0
23 + -22y + y2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-23' to each side of the equation.
23 + -22y + -23 + y2 = 0 + -23

Reorder the terms:
23 + -23 + -22y + y2 = 0 + -23

Combine like terms: 23 + -23 = 0
0 + -22y + y2 = 0 + -23
-22y + y2 = 0 + -23

Combine like terms: 0 + -23 = -23
-22y + y2 = -23

The y term is -22y.  Take half its coefficient (-11).
Square it (121) and add it to both sides.

Add '121' to each side of the equation.
-22y + 121 + y2 = -23 + 121

Reorder the terms:
121 + -22y + y2 = -23 + 121

Combine like terms: -23 + 121 = 98
121 + -22y + y2 = 98

Factor a perfect square on the left side:
(y + -11)(y + -11) = 98

Calculate the square root of the right side: 9.899494937

Break this problem into two subproblems by setting 
(y + -11) equal to 9.899494937 and -9.899494937.

Subproblem 1

y + -11 = 9.899494937 Simplifying y + -11 = 9.899494937 Reorder the terms: -11 + y = 9.899494937 Solving -11 + y = 9.899494937 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '11' to each side of the equation. -11 + 11 + y = 9.899494937 + 11 Combine like terms: -11 + 11 = 0 0 + y = 9.899494937 + 11 y = 9.899494937 + 11 Combine like terms: 9.899494937 + 11 = 20.899494937 y = 20.899494937 Simplifying y = 20.899494937

Subproblem 2

y + -11 = -9.899494937 Simplifying y + -11 = -9.899494937 Reorder the terms: -11 + y = -9.899494937 Solving -11 + y = -9.899494937 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '11' to each side of the equation. -11 + 11 + y = -9.899494937 + 11 Combine like terms: -11 + 11 = 0 0 + y = -9.899494937 + 11 y = -9.899494937 + 11 Combine like terms: -9.899494937 + 11 = 1.100505063 y = 1.100505063 Simplifying y = 1.100505063

Solution

The solution to the problem is based on the solutions from the subproblems. y = {20.899494937, 1.100505063}

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