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OpenStudy (anonymous):
Factor the trinomial completely: 3x^2-20x-7
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OpenStudy (luigi0210):
Hello @ktawneil , Welcome to Openstudy :)
OpenStudy (luigi0210):
Do you know how to start?
OpenStudy (anonymous):
i started playing around with numbers and did (3x-6)(1x-1) but in know thats not right
OpenStudy (zzr0ck3r):
have you heard of the "ac method"
OpenStudy (luigi0210):
That's because 6*1=6
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OpenStudy (luigi0210):
-6*-1=6
OpenStudy (luigi0210):
You need 7 and 1
OpenStudy (anonymous):
would it be (3x+7)(1x-1)
OpenStudy (luigi0210):
You got the right numbers, just in the wrong place
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