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OpenStudy (anonymous):
Explain, in complete sentences, why the expression x2 + 28x + 60 is prime
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myininaya (myininaya):
There are no factors of 60 that add up to be 28.
myininaya (myininaya):
let me put alittle bit more in there There are no two factors of 60 that multiply to be 60 that add up to be 28.
OpenStudy (anonymous):
use quadratic formula
OpenStudy (anonymous):
If the 60 were negative, then it would be factorable using 30 and -2. But it's not.
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