love2study
love2study
31-01-2017
Mathematics
contestada
multiply and simplify: (3x-1)(3x+1)
Respuesta :
apologiabiology
apologiabiology
31-01-2017
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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Аноним
Аноним
31-01-2017
the answer is 1 thats what I got
Answer Link
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