(y^2-3y+2)(y^2+3y-2)=y^2(y+3)(y-3)
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(y^2-3y+2)(y^2+3y-2)=y^2(y+3)(y-3)
[y^2 - (3y-2)]*[y^2 + (3y-2)] = y^2 *(y^2-9)
y^4 - (3y-2)^2 = y^4 - 9y^2
(3y-2)^2 = 9y^2
(3y-2)^2 - (3y)^2 = 0
(3y-2 +3y)(3y-2 -3y) = 0
(6y-2) * (-2)=0
6y-2 = 0
y = 1/3
[y^2 - (3y-2)]*[y^2 + (3y-2)] = y^2 *(y^2-9)
y^4 - (3y-2)^2 = y^4 - 9y^2
(3y-2)^2 = 9y^2
(3y-2)^2 - (3y)^2 = 0
(3y-2 +3y)(3y-2 -3y) = 0
(6y-2) * (-2)=0
6y-2 = 0
y = 1/3
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