Posted by Tshepiso mphehlo on Friday, February 25, 2011 at 1:03pm.
First factor out the 3.
3a^2-21a-24 = 3(a^2 -7a -8)
How about
3(a-8)(a+1) ?
3a^2-21a-24=3(a^2-7a-8)=3(a-8)(a+1).you just look at the l.c.m of the numbrs n divide that numbers by dat l.cm e.g 3,21,n 24 l.cm is 3 u jst divide ths number by dat 3 bt nt 4gtng da base wich is b
I dnt undstnd
I dnt undstnd
Come again
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