Question

if -1 is a zero of a polynomial f(x)=x2-7x-8 calculate the other zero​

Answer 1

Answer:

if -1 is a zero of a polynomial f(x)=x2-7x-8 calculate the other zero

f(x) = x2 - 7x - 8

Let other zero be k,

then Sum of zeroes - 1 + k = -(-7 / 1) = 7 or, k = 8

Answer 2

Answer:

The other zero=8

Step-by-step explanation:

f(x)=x²-7x-8=0

x²-8x+x-8=0

x(x-8)+1(x-8)=0

(x-8)(x+1)=0

(x-8)=0 & (x+1)=0

x=8 & x=-1

So, the other zero is 8