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Mathematics
OpenStudy (anonymous):

If someone could help me with these last few problems, it would be nice. Check all polynomials that are perfect square trinomials: A) 49x^2 − 8x + 16 B) 4a^2 − 20a + 25 C) 25b^2 − 5b + 10 D) 16x^2 − 8x + 1

OpenStudy (anonymous):

Anyone? :)

OpenStudy (anonymous):

Which ones are perfect square trinomials?

OpenStudy (anonymous):

a is do you know how i figured that out?

OpenStudy (anonymous):

No, I don't.

OpenStudy (anonymous):

have you learned foil?

OpenStudy (diyadiya):

No A is not the right answer!

OpenStudy (anonymous):

Diya, there is more than one I can choose for the right answer. How come A isn't one of them?

OpenStudy (anonymous):

|dw:1338062447129:dw| that is y it is

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