Question

6.If -1 is zero of the given polynomial p (x) = ax³-x²+x+4-1 then find value of a.

Answer 1

Step-by-step explanation:

p(-1) = a*(-1)^3 - (-1)^2+(-1)+4-1

= a*-1-1-1+3

= -a-2+3

= -a+1

then

-a+1 = 0

a = 1

Answer 2

Answer:

a(-1)³-(-1)²+(-1)+4-1

-a- 1- 1+ 4-1

-a + 1 = 0

so when -a goes to the next side it becomes positive

so, a = 1