Factorise: (Factorisation of cubic polynomial) 2y³+ y² – 2y-1
(Guys help I have exam in few hours)
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Answer:
y+1 will be the factor
Step-by-step explanation:
y+1 =0
y= -1
2(-1)3+(-1)2-2(-1)-1
= -2 +1 +2 -1
= -3 +3
=0
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(x-1)(x+1)(2x+1)
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