See my previous answer to this same question. the vertical angles have to be right angles
-3. If you need it, here is my work
Answer:
( 3 )The simplified product has a degree of 2.
Step-by-step explanation:
Multiply the parenthesis using FOIL method
multiply b inside the second parenthesis
Combine like terms
Simplified product has 3 terms, and the degree of 2 because we have b^2
and c^2