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Which polynomial is a perfect square trinomial? (1 point) 49x2 − 28x + 16 4a2 − 20a + 25 25b2 − 20b − 16 16x2 − 24x − 9?

Which polynomial is a perfect square trinomial? (1 point) 49x2 − 28x + 16 4a2 − 20a + 25 25b2 − 20b − 16 16x2 − 24x − 9?
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Which polynomial is a perfect square trinomial? (1 point) 49x2 − 28x + 16 4a2 − 20a + 25 25b2 − 20b − 16 16x2 − 24x − 9?

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User Vianmixt
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8.1k points

1 Answer

1 vote
4a² − 20a + 25 is a perfect square trinomial

4a² − 20a + 25 =
(2a)² - 2*2a*5 + 5² =
(2a - 5)²

answered
User Mathieu Garstecki
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8.4k points
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