Question

数学题啊!要有详细步骤发给我1.5.9.9.9.3.0.7.4.8.@.q.q.com发给我1.5.9.9.9.3.0.

Answer 1

1(1) =(a-1)(7+x) (2) =(a-b)[3(a-b)-6]=3(a-b)(a-b-2) (3) =(m-n)[2(m-n)-m]=(m-n)(m-2n) (4) =(x-y)²(x-y)=(x-y)³ (5) =(a²+b²)(m+n) (6) =(a-b)²[18(a-b)-12b]=6(3a-5...