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OpenStudy (anonymous):
multiply and simplify (sq.x-9)(sq.x-3)
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OpenStudy (anonymous):
x - 12sq.x + 27
OpenStudy (anonymous):
this is what I got x^2-x-27
OpenStudy (anonymous):
sq.x * sq.x = sq.(x^2) = x
OpenStudy (anonymous):
don't you use the FOIL method
OpenStudy (anonymous):
you can use the foild method nel, try and what will you get ?
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OpenStudy (anonymous):
FOIL*
OpenStudy (anonymous):
sq.x * sq.x - 3sq.x - 9sq.x + 9*3 sq.(x^2) - 12sq.x + 27 x - 12sq.x + 27
OpenStudy (anonymous):
like he did :)
OpenStudy (anonymous):
okay I see how you did it
OpenStudy (anonymous):
DX
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