L square + M square + M square + N square + N square + L square + 2lm + 2 mn + 2nl
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answer:- hope this helps you (mark brainliest is helpful)
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Answer: 2(l²+m²+n²+lm+mn+nl)
Step-by-step explanation:
l²+m²+m²+n²+n²+l²+2lm+2mn+2nl
First we have to put same digits together..
l²+l²+m²+m²+n²+n²+ 2lm+2mn+2nl
Then we have to add same digits...
2l²+2m²+2n²+2lm+2mn+2nl
2 is common in every digit....
2(l²+m²+n²+lm+mn+nl)
Hope it helps.......
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