Question

pls tell me
(l²-m²)(2l+m)-m³​

Answer 1

Answer:

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Step-by-step explanation:

l

2

+m

2

,m

2

+n

2

,n

2

+l

2

,2lm+2mn+2nl

Adding we get,

l

2

+m

2

+m

2

+n

2

+n

2

+l

2

+2lm+2mn+2nl

=2l

2

+2m

2

+2n

2

+2lm+2mn+2nl

=2(l

2

+m

2

+n

2

+lm+mn+nl)

Answer 2

Step-by-step explanation:

( l²-m²)(2l+m)-m³

2l³+ml²-2ml²+m³-m³

2l³-ml²