Find all zeros of the function

x=-1,-3,2i and -2i

Step-by-step explanation:

By plugging in x=-1, f(x)=0 and x=-3,f(x)=0

That means x+1 and x+3 are roots of the fourth degree polynomial.

(x+1)(x+3)=x²+4x+3

Divide the polynomial by x²+4x+3 and that gives x²+4.

We now find the zeros of the factors

(x²+4x+3)(x²+4)=0

x=-1,-3,2i and -2i

c

step-by-step explanation:

to determine the unit cost your would divide the total cost by the number sold.

7 bagels for $4.41       $4.41/7 = $.63 each at fresh side

5 bagels for $3.60         $3.60/5 = $.72 each at value mart