SOLUTION: what is the foil solution for(a+b)(a-b) ?

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Question 587369: what is the foil solution for(a+b)(a-b) ?
Found 2 solutions by solver91311, josmiceli:
Answer by solver91311(24713) About Me  (Show Source):
You can put this solution on YOUR website!


You have a conjugate pair. The product of a conjugate pair is always the difference of two squares.

John

My calculator said it, I believe it, that settles it
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Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
+%28+a+%2B+b+%29%2A%28+a+-+b+%29+=+a%5E2+%2B+ab+-+ab+-+b%5E2+
+%28+a+%2B+b+%29%2A%28+a+-+b+%29+=+a%5E2+-+b%5E2+
----------------------------
I like to do it with real numbers:
+%28+7+%2B+5+%29%2A%28+7+-+5+%29+=+49+%2B+35+-+35+-+25+
+%28+7+%2B+5+%29%2A%28+7+-+5+%29+=+49+-+25+
+%28+7+%2B+5+%29%2A%28+7+-+5+%29+=+24+
+12%2A2+=+24+
OK