(4y-7)(y+11)-(5y+1)(9y-2)=17-y

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Solution for (4y-7)(y+11)-(5y+1)(9y-2)=17-y equation:


Simplifying
(4y + -7)(y + 11) + -1(5y + 1)(9y + -2) = 17 + -1y

Reorder the terms:
(-7 + 4y)(y + 11) + -1(5y + 1)(9y + -2) = 17 + -1y

Reorder the terms:
(-7 + 4y)(11 + y) + -1(5y + 1)(9y + -2) = 17 + -1y

Multiply (-7 + 4y) * (11 + y)
(-7(11 + y) + 4y * (11 + y)) + -1(5y + 1)(9y + -2) = 17 + -1y
((11 * -7 + y * -7) + 4y * (11 + y)) + -1(5y + 1)(9y + -2) = 17 + -1y
((-77 + -7y) + 4y * (11 + y)) + -1(5y + 1)(9y + -2) = 17 + -1y
(-77 + -7y + (11 * 4y + y * 4y)) + -1(5y + 1)(9y + -2) = 17 + -1y
(-77 + -7y + (44y + 4y2)) + -1(5y + 1)(9y + -2) = 17 + -1y

Combine like terms: -7y + 44y = 37y
(-77 + 37y + 4y2) + -1(5y + 1)(9y + -2) = 17 + -1y

Reorder the terms:
-77 + 37y + 4y2 + -1(1 + 5y)(9y + -2) = 17 + -1y

Reorder the terms:
-77 + 37y + 4y2 + -1(1 + 5y)(-2 + 9y) = 17 + -1y

Multiply (1 + 5y) * (-2 + 9y)
-77 + 37y + 4y2 + -1(1(-2 + 9y) + 5y * (-2 + 9y)) = 17 + -1y
-77 + 37y + 4y2 + -1((-2 * 1 + 9y * 1) + 5y * (-2 + 9y)) = 17 + -1y
-77 + 37y + 4y2 + -1((-2 + 9y) + 5y * (-2 + 9y)) = 17 + -1y
-77 + 37y + 4y2 + -1(-2 + 9y + (-2 * 5y + 9y * 5y)) = 17 + -1y
-77 + 37y + 4y2 + -1(-2 + 9y + (-10y + 45y2)) = 17 + -1y

Combine like terms: 9y + -10y = -1y
-77 + 37y + 4y2 + -1(-2 + -1y + 45y2) = 17 + -1y
-77 + 37y + 4y2 + (-2 * -1 + -1y * -1 + 45y2 * -1) = 17 + -1y
-77 + 37y + 4y2 + (2 + 1y + -45y2) = 17 + -1y

Reorder the terms:
-77 + 2 + 37y + 1y + 4y2 + -45y2 = 17 + -1y

Combine like terms: -77 + 2 = -75
-75 + 37y + 1y + 4y2 + -45y2 = 17 + -1y

Combine like terms: 37y + 1y = 38y
-75 + 38y + 4y2 + -45y2 = 17 + -1y

Combine like terms: 4y2 + -45y2 = -41y2
-75 + 38y + -41y2 = 17 + -1y

Solving
-75 + 38y + -41y2 = 17 + -1y

Solving for variable 'y'.

Reorder the terms:
-75 + -17 + 38y + y + -41y2 = 17 + -1y + -17 + y

Combine like terms: -75 + -17 = -92
-92 + 38y + y + -41y2 = 17 + -1y + -17 + y

Combine like terms: 38y + y = 39y
-92 + 39y + -41y2 = 17 + -1y + -17 + y

Reorder the terms:
-92 + 39y + -41y2 = 17 + -17 + -1y + y

Combine like terms: 17 + -17 = 0
-92 + 39y + -41y2 = 0 + -1y + y
-92 + 39y + -41y2 = -1y + y

Combine like terms: -1y + y = 0
-92 + 39y + -41y2 = 0

Begin completing the square.  Divide all terms by
-41 the coefficient of the squared term: 

Divide each side by '-41'.
2.243902439 + -0.9512195122y + y2 = 0

Move the constant term to the right:

Add '-2.243902439' to each side of the equation.
2.243902439 + -0.9512195122y + -2.243902439 + y2 = 0 + -2.243902439

Reorder the terms:
2.243902439 + -2.243902439 + -0.9512195122y + y2 = 0 + -2.243902439

Combine like terms: 2.243902439 + -2.243902439 = 0.000000000
0.000000000 + -0.9512195122y + y2 = 0 + -2.243902439
-0.9512195122y + y2 = 0 + -2.243902439

Combine like terms: 0 + -2.243902439 = -2.243902439
-0.9512195122y + y2 = -2.243902439

The y term is -0.9512195122y.  Take half its coefficient (-0.4756097561).
Square it (0.2262046401) and add it to both sides.

Add '0.2262046401' to each side of the equation.
-0.9512195122y + 0.2262046401 + y2 = -2.243902439 + 0.2262046401

Reorder the terms:
0.2262046401 + -0.9512195122y + y2 = -2.243902439 + 0.2262046401

Combine like terms: -2.243902439 + 0.2262046401 = -2.0176977989
0.2262046401 + -0.9512195122y + y2 = -2.0176977989

Factor a perfect square on the left side:
(y + -0.4756097561)(y + -0.4756097561) = -2.0176977989

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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