Question

add the following : l^2+m^2+n^2,m^2+n^2+p^2,-p^2-m^2-n^2,l^2+2p^2
​

Answer 1

Answer:

$l {}^{2} + {m}^{2} + {n}^{2} + {m }^{2} + n {}^{2} + p {}^{2} + -p {}^{2} - m {}^{2} - n {}^{2} - l {}^{2} + 2p {}^{2}$

$= = > 2p {}^{2} + m {}^{2} + n {}^{2}$