(y-7-y^2)(y-7-y^2-1)=20

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Solution for (y-7-y^2)(y-7-y^2-1)=20 equation: 


Simplifying
(y + -7 + -1y2)(y + -7 + -1y2 + -1) = 20

Reorder the terms:
(-7 + y + -1y2)(y + -7 + -1y2 + -1) = 20

Reorder the terms:
(-7 + y + -1y2)(-7 + -1 + y + -1y2) = 20

Combine like terms: -7 + -1 = -8
(-7 + y + -1y2)(-8 + y + -1y2) = 20

Multiply (-7 + y + -1y2) * (-8 + y + -1y2)
(-7(-8 + y + -1y2) + y(-8 + y + -1y2) + -1y2 * (-8 + y + -1y2)) = 20
((-8 * -7 + y * -7 + -1y2 * -7) + y(-8 + y + -1y2) + -1y2 * (-8 + y + -1y2)) = 20
((56 + -7y + 7y2) + y(-8 + y + -1y2) + -1y2 * (-8 + y + -1y2)) = 20
(56 + -7y + 7y2 + (-8 * y + y * y + -1y2 * y) + -1y2 * (-8 + y + -1y2)) = 20
(56 + -7y + 7y2 + (-8y + y2 + -1y3) + -1y2 * (-8 + y + -1y2)) = 20
(56 + -7y + 7y2 + -8y + y2 + -1y3 + (-8 * -1y2 + y * -1y2 + -1y2 * -1y2)) = 20
(56 + -7y + 7y2 + -8y + y2 + -1y3 + (8y2 + -1y3 + 1y4)) = 20

Reorder the terms:
(56 + -7y + -8y + 7y2 + y2 + 8y2 + -1y3 + -1y3 + 1y4) = 20

Combine like terms: -7y + -8y = -15y
(56 + -15y + 7y2 + y2 + 8y2 + -1y3 + -1y3 + 1y4) = 20

Combine like terms: 7y2 + y2 = 8y2
(56 + -15y + 8y2 + 8y2 + -1y3 + -1y3 + 1y4) = 20

Combine like terms: 8y2 + 8y2 = 16y2
(56 + -15y + 16y2 + -1y3 + -1y3 + 1y4) = 20

Combine like terms: -1y3 + -1y3 = -2y3
(56 + -15y + 16y2 + -2y3 + 1y4) = 20

Solving
56 + -15y + 16y2 + -2y3 + 1y4 = 20

Solving for variable 'y'.

Reorder the terms:
56 + -20 + -15y + 16y2 + -2y3 + 1y4 = 20 + -20

Combine like terms: 56 + -20 = 36
36 + -15y + 16y2 + -2y3 + 1y4 = 20 + -20

Combine like terms: 20 + -20 = 0
36 + -15y + 16y2 + -2y3 + 1y4 = 0

The solution to this equation could not be determined.

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