Asked by birhanu

find zeros?
A, f(y)=y^5-2y^3+y
B, t^3-7t+6
C, 1-1/5x
Answered by oobleck
A. f(y) = y(y^4-2y^2+1) = y(y^2-1)^2 = y(y-1)^2(y+1)^2
B. (t-1)(t-6)
C. (5x-1)/5x
now it should be clear
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