Naterx7
The product of (a − b)(a − b) is a perfect square trinomial.
Sometimes
Always
Never



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mayankdevnani
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always!!

Naterx7
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I thought it was sometimes..

mayankdevnani
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no

mayankdevnani
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just a minute!!! i am wrong!! the answer is never

mayankdevnani
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The product of (a + b)(a − b) is a perfect square trinomial.
never
(a+b)(ab) gives you (a^2b^2)
this is a difference of squares
not a perfect square

mayankdevnani
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ok @Naterx7