Question

If-1 is a zero of polynomial p(x) = ax? - x? + 4, then find a. ​

Answer 1

Answer:

answer :

put x = -1

AND the answer is a = 2

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Answer 2

Given p(x)=ax³-x²+x+4

Since -1 is a zero of p(x)

p(-1)=0

Replace x by (-1) in p(x) we get p(-1).

p(-1)=a(-1)³-(-1)²+(-1)+4

0=a(-1)-1–1+4

-a-2+4=0

a=4–2

a=2.