2,4,6, плиз срочно пж

Question

2,4,6, плиз срочно пж

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Answer 1

2) m(n-1)
4) 1?5(3m +n)
6) ab( c+1)

Answer 2

1)a(b-c)
2)m(n-1)
3)3(3x-y)
4)1.5(3m+n)
5)mn(k-1)
6)ab(c+1)