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OpenStudy (goformit100):
Explain why 3 × 5 × 7 + 7 is a composite number.
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OpenStudy (goformit100):
@genius12
OpenStudy (anonymous):
because it has a factor of 7
OpenStudy (goformit100):
But how it has the factor, Sir please show.
OpenStudy (anonymous):
\(3\times 5\times 7+7=(3\times 5+1)\times 7\) by the distributive law
OpenStudy (anonymous):
of course you could always compute the number and see that it is composite
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OpenStudy (goformit100):
OMG! i got it now :) how foolish I was, didn't use or thought about distributive law
OpenStudy (goformit100):
Anyways, Thank you
OpenStudy (anonymous):
yw
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