Question

Find the value of the polynomial y²-5y+6 at y=-1.​

Answer 1

Answer:

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Answer 2

Answer:

Let f(y)=y  

3

−5y−2y  

2

+3

When y=−2

f(−2)=(−2)  

3

−5(−2)−2(−2)  

2

+3

        =−8+10−8+3

        =−16+13

        =−3