Question

if -1 is a zero of the polynomial x^3+3x^2+x+k then find the value of k​

Answer 1

Answer:-7

Step-by-step explanation:

Answer 2

Step-by-step explanation:

zero of polynomial means if the value is substituted in that polynomial it becomes zero

so x^3 + 3x^2 +x + k

substitute x =-1

so (-1)^3 + 3(-1)^2 + (-1) + k=0

-1+3-1+k=0

1+k=0

k=-1