ham17
ham17
22-03-2018
Mathematics
contestada
Question 15
Factorise 21-9x
Respuesta :
MsEHolt
MsEHolt
01-04-2018
The factored form would be 3(7-3x).
The GCF of these two is 3; that is the largest number either of them can be divided by, and they do not have a variable in common. This gives us:
3( )
21/3 = 7, so we have:
3(7 )
9x/3 = 3x, which gives us
3(7-3x)
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