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Koen Pham
Mathematics
22 March, 10:53
Multiply and simplify: (3x-1) (3x+1)
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Chad Shaffer
22 March, 10:55
0
Easily done
the fastest way is to recognize the differnce of 2 perfec squares
(a-b) (a+b) = a²-b²
sp
o
(3x-1) (3x+1) = (3x) ² - (1) ²=9x²-1
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Thyme
22 March, 11:02
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The answer is 1 thats what I got
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