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Mathematics 21 Online
AthenaSaige:

which polynomial is a perfect square trinomial. 4x^2 − 12x + 9 16x^2 + 24x − 9 4a^2 − 10a + 25 36b^2 − 24b − 16

XLynx:

It's the first one.

AthenaSaige:

thank you so much!

XLynx:

Once factored, you get (x+-5)(x+-5)

XLynx:

Not an issue (:

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