add:- L (L-m), m ( m-n) and n(n-1)
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Answer:
2 means Square
Step-by-step explanation:
Step 1 = Solve L(L-m)
L×L - L×m
L2 - Lm
Step 2 = Solve m(m-n)
m×m - m×n
m2 - mn
Step 3 = Solve n(n-1)
n×n - n×1
n2 - 1n
Step 4 = Add L2 - Lm and m2 - mn and n2 - 1n
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