use factor therorem to factorise
y³-7y+6
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Step-by-step explanation:
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Step-by-step explanation:
Constant term of p(y)is 6.
Factors of 6 are +1,+2,+6
p(1)"=1-7+6=0
=(y-1) is a factor of p(x).
Dividing p(y) by (y-1),we find the other factor.
P(y)= (y-1) (y2+y-6)
=>(y-1(y2+3y-2y -6)
=>(y-1) [y(y+3) - 2(y+3)]
=>(y-1) (y +3) ( y-2)
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