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Which polynomial is a perfect square trinomial? 36x2 − 18x − 9 4a2 − 28a − 49 25b2 − 40b + 16 4x2 − 6x + 9

Which polynomial is a perfect square trinomial? 36x2 − 18x − 9 4a2 − 28a − 49 25b2 − 40b + 16 4x2 − 6x + 9
asked 68.4k views
2 votes
Which polynomial is a perfect square trinomial?

36x2 − 18x − 9
4a2 − 28a − 49
25b2 − 40b + 16
4x2 − 6x + 9

asked
User Wottle
by
8.2k points

2 Answers

4 votes

Answer:

25b2-40b + 16

Explanation:

Hope It's Right !! Sorry if its really late

answered
User Hmallett
by
8.1k points
4 votes
25b^2 - 40b + 16 = (5b - 4)(5b - 4)

so its the third choice
answered
User Abdullah Jibaly
by
8.5k points
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