ADD: 3l (l – 4 m + 5 n) and 4l ( 10 n – 3 m + 2 l )
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Answer:
11l×l - 24lm + 55ln
Step-by-step explanation:
3l(l-4m+5n) + 4l(10n -3m+2l)
3ll-12lm+15ln + 40ln-12lm+8ll
11ll-24lm+55ln
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