y
x
y
| -8
15
-22
16
-12
-2
17
-16
1-21 | -1
-20 9 4
-19 | -7
4
18
-20

Answer: y = 0
Step-by-step explanation:
When a product of two or more terms equals zero, then at least one of the terms must be zero.
We shall now solve each term = 0 separately
In other words, we are going to solve as many equations as there are terms in the product
Any solution of term = 0 solves product = 0 as well.