Ley models the factorization of a trinomial with algebra

tiles as shown

Rodney forgot to place x-tiles in zero pairs in the model of

the trinomial. How many zero pairs of x-tiles should he

place in the model?

0

O

1

2

OO

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The first one, i believe, would be correct. all the others have one thing in common, and that's that they have repeating numbers. in the second one, x and y have repeating 6's and 3's, and in the third, x and y have repeating 6's as well. in the last one, there are repeating 3's. the first one has no repeating numbers.

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