a-b=2,3a+2b,则3a(a-b)+2b(a-b)=____3a+2b=3
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![a-b=2,3a+2b,则3a(a-b)+2b(a-b)=____3a+2b=3](/uploads/image/z/3770515-19-5.jpg?t=a-b%3D2%2C3a%2B2b%2C%E5%88%993a%28a-b%29%2B2b%28a-b%29%3D____3a%2B2b%3D3)
a-b=2,3a+2b,则3a(a-b)+2b(a-b)=____3a+2b=3
a-b=2,3a+2b,则3a(a-b)+2b(a-b)=____
3a+2b=3
a-b=2,3a+2b,则3a(a-b)+2b(a-b)=____3a+2b=3
3a+2b等于几?
3a(a-b)+2b(a-b)
=(a-b)(3a+2b)
=2(3a+2b)
就是2乘以3a+2b的值,你自己算一下
3a(a-b)+2b(a-b)=(a-b)(3a+2b)