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Mathematics
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OpenStudy (music0203):
multiply. (4x+3)(4x-3)
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OpenStudy (kidrah69):
This one is just like that last one :)
4x times 4x = ?
OpenStudy (music0203):
16n?
OpenStudy (music0203):
x!
OpenStudy (kidrah69):
16x ^2 remeber we have 2 x's :)
OpenStudy (music0203):
got it
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OpenStudy (kidrah69):
Next
4x times -3
OpenStudy (music0203):
-12x?
OpenStudy (kidrah69):
yep!
what is 3 times 4x
OpenStudy (music0203):
7x
OpenStudy (music0203):
12
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OpenStudy (music0203):
12x sorry
OpenStudy (kidrah69):
12x is right :)
-3 x 3 = ?
OpenStudy (music0203):
-9
OpenStudy (kidrah69):
16x^2 - 12x +12x - 9
combine like terms
OpenStudy (music0203):
to combine like terms, do you add all the number that come before an x?
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OpenStudy (kidrah69):
-12+12 = ?
OpenStudy (kidrah69):
we combine those since they both have x's
OpenStudy (kidrah69):
ONLY x's NOT x^2
OpenStudy (music0203):
okay so thats 0. which means- 16x^2 - x - 9??
OpenStudy (kidrah69):
16x^2-9 <---answer
we do not count the 0 both numbers cancel out so 0 is gone
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OpenStudy (music0203):
thank you so much!
OpenStudy (kidrah69):
No problem :)
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