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xxMikexx [17]
3 years ago
14

Y2 +4y+1 ; y = -2 . y2-1

Mathematics
1 answer:
morpeh [17]3 years ago
5 0

Step-by-step explanation:

y2+4y+1=0. where, y=-2

(-2)2+4(-2)+1

-4-8+1=0

-12+1=0

-11=0

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