factorise: ma+nb+nc+mb+na+mc
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ma+mb+mc+na+nb+nc
m(a+b+c)+n(a+b+c)
(m+n)(a+b+c)
m(a+b+c)+n(a+b+c)
(m+n)(a+b+c)
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Answer:
ma+mb+mc+na+nb+nc m(a+b+c)+n(a+b+c) (m+n)(a+b+c)
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