We have to factor the polynomial.
x^8+3x^5
Find the GCF between 1,3,x,5,8
The GCF is x^5
Divide the polynomial by x^5
x^5(x^3+3)
Karen will have to buy 14 jars to have an equal weight of peanut butter
We would need to know how many are in each box to figure this out.