Answer:
C
A
Step-by-step explanation:
For a trinomial to be a perfect square trinomial, it has to factor into (y - c)(y - c), where c is a constant (which can also be written as (y - c)²). For Question 5, I'm going to factor each answer:
(y - 13)(y - 13) = (y - 13)²
(y + 9)(y + 9) = (y + 9)²
Not factorable
(y + 5)(y + 5) = (y + 5)²
So we can clearly see that C is the correct answer since it can't be written in the form (y - c)² since it isn't factorable.
Question 6:
Not factorable
(y + 10)(y + 10) = (y - 8)²
(y - 8)(y - 8) = (y - 8)²
(y + 5)(y + 5) = (y + 5)²
The answer is A.
