Math
posted by Mary .
Find the HCF
1) 7x and 9 : nothing
2) x^2(x4) and x(x4) : its (x4)?
3) 6b and 2b^3 : 2b ,?
4) 6(x1)^2 and 16(x7)(x1) : x1 ,
5) 18y,27y, 9xy^2 : 9y
6) 5a^2 and 25a : 5a
7) 6abc, 8ab, 12bc : 2b
8) 9a^2b and 18ab^2 : 9ab

1) correct
2) x(x4)
3) correct
4) 2(x1)
5) correct
6) correct
7) correct
8) correct
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