Factorised form of l – 7 – 7mn + lmn is _______________.
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Answer:
( l - 7 ) ( 1 + mn )
Step-by-step explanation:
l - 7 - 7mn + lmn
l + lmn - 7 - 7mn
l ( 1 + mn ) - 7 ( 1 + mn )
=> ( l - 7 ) ( 1 + mn )
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