151k views
16 votes
Write the trinomial as a square of a binomial or as an expression opposite to a square

of a binomial.
-42a +9a²+49

User Thet
by
4.3k points

2 Answers

6 votes

Answer:

(3a-7)^2 is the answer

User IxM
by
4.8k points
5 votes
(3a-7)^2

1. 9a^2-21a-21a+49
2. 3a(3a-7)-7(3a-7)
3. (3a-7)(3a-7)
4. Combine like terms
User Debobroto Das
by
4.4k points