- Factorise the quadratic expression: 6x^2-x-12?

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In equal-tempered tuning the frequency (in Hz) of the note one tone above 220 Hz is...? I'm trying to find a compound that contains an alkaline earth metal and a polytomic ion and then finding its molar mass.? Let X1 & X2 have joint pmf p(x1, x2)=(x1x2)/36. 0 otherwise Find joint pmf of Y1=X1X2 and Y2=X2? Chi mi sa spiegare questa dervata (ln^2x)/x dx? I need to describe two ways I would measure moles in chemistry lab and identify any equipment I would use?