please factorise it please
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Answer:
(l+m)² + 4lm
l²+m²+2lm+4lm
l²+m²+6lm
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Answer:
ans..
(l+m)²-4lm
use identity (a+b)²=a²+b²+2ab
l²+m²+2lm-4lm
l²+m²-2lm
(l-m)²
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