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OpenStudy (marcoreus11):
How do u do this? I am stuck...
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OpenStudy (marcoreus11):
Here
OpenStudy (caozeyuan):
(x-2)*(x+6)=x^2-2*x+6*x-2*6, agree?
OpenStudy (caozeyuan):
so(x-2)(x+6)=x^2+4x-12
OpenStudy (marcoreus11):
did u foil that?
OpenStudy (caozeyuan):
but you also have a 3 in front of eveything, so y=3(x^2+4x-12)=3x^2+12x-36
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OpenStudy (caozeyuan):
what's foil?
OpenStudy (caozeyuan):
sorry I didnt grew up in US
OpenStudy (marcoreus11):
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