Add the Following. Lsquare2 + Msquare2, Msquare2 + Nsquare2, Nsquare2 + Lsquare2, 2lm + 2mn + 2nl - Mathematics
Add the following. l2 + m2, m2 + n2, n2 + l2, 2lm + 2mn + 2nl
The given expressions written in separate rows, with like terms one below the other and then the addition of these expressions are as follows.
Thus, the sum of the given expressions is 2(l2 + m2 + n2 + lm + mn + nl).
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