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Sauron [17]
3 years ago
7

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

Mathematics
1 answer:
aliina [53]3 years ago
3 0
4a² − 20a + 25 <span>is a perfect square trinomial

</span>4a² − 20a + 25 = 
<span>(2a)</span>² - 2*2a*5 + 5² = 
<span>(2a - 5)</span>²<span>

</span>
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