-Y^2-10Y+19=0

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Solution for -Y^2-10Y+19=0 equation:


Simplifying
-1Y2 + -10Y + 19 = 0

Reorder the terms:
19 + -10Y + -1Y2 = 0

Solving
19 + -10Y + -1Y2 = 0

Solving for variable 'Y'.

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

Divide each side by '-1'.
-19 + 10Y + Y2 = 0

Move the constant term to the right:

Add '19' to each side of the equation.
-19 + 10Y + 19 + Y2 = 0 + 19

Reorder the terms:
-19 + 19 + 10Y + Y2 = 0 + 19

Combine like terms: -19 + 19 = 0
0 + 10Y + Y2 = 0 + 19
10Y + Y2 = 0 + 19

Combine like terms: 0 + 19 = 19
10Y + Y2 = 19

The Y term is 10Y.  Take half its coefficient (5).
Square it (25) and add it to both sides.

Add '25' to each side of the equation.
10Y + 25 + Y2 = 19 + 25

Reorder the terms:
25 + 10Y + Y2 = 19 + 25

Combine like terms: 19 + 25 = 44
25 + 10Y + Y2 = 44

Factor a perfect square on the left side:
(Y + 5)(Y + 5) = 44

Calculate the square root of the right side: 6.633249581

Break this problem into two subproblems by setting 
(Y + 5) equal to 6.633249581 and -6.633249581.

Subproblem 1

Y + 5 = 6.633249581 Simplifying Y + 5 = 6.633249581 Reorder the terms: 5 + Y = 6.633249581 Solving 5 + Y = 6.633249581 Solving for variable 'Y'. Move all terms containing Y to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + Y = 6.633249581 + -5 Combine like terms: 5 + -5 = 0 0 + Y = 6.633249581 + -5 Y = 6.633249581 + -5 Combine like terms: 6.633249581 + -5 = 1.633249581 Y = 1.633249581 Simplifying Y = 1.633249581

Subproblem 2

Y + 5 = -6.633249581 Simplifying Y + 5 = -6.633249581 Reorder the terms: 5 + Y = -6.633249581 Solving 5 + Y = -6.633249581 Solving for variable 'Y'. Move all terms containing Y to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + Y = -6.633249581 + -5 Combine like terms: 5 + -5 = 0 0 + Y = -6.633249581 + -5 Y = -6.633249581 + -5 Combine like terms: -6.633249581 + -5 = -11.633249581 Y = -11.633249581 Simplifying Y = -11.633249581

Solution

The solution to the problem is based on the solutions from the subproblems. Y = {1.633249581, -11.633249581}

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