All rhombuses have 2 pairs of parallel sides.
Answer:

Step-by-step explanation:
<u>Step 1: Find the a, b, and c values</u>


The a value is: 3
The b value is: -4
The c value is: -20
Answer: 
Step-by-step explanation:
19-4c=17
19-17=4c
2=4c
2/4=c
therefore, c=1/2

The multiple zero is x = -4.
The multiplicity is 2 because there are two values of x.
Answer:
x=-3
Step-by-step explanation: