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Mathematics 21 Online
OpenStudy (anonymous):

Factor. 2x^2-11x-6

OpenStudy (anonymous):

2x^2-12x+x-6 2x(x-6)+1(x-6) (2x+1)(x-6)

OpenStudy (anonymous):

A tank can be filled by three pipes separately in 20,30 and 60 minutes respectively. In how many minutes can it be filled by the three pipes acting together? please answer it for me...please mathematicalpro

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