Question

10.
내용
df
prove that
(i) (ab + cd + ef )2 = (a? + c2 + 2) (62 + d2 +
e2
се
a2 ca
62
d2 72
ac
+
ae
+
*
od
af bf​

Answer 1

Answer:

sorry I don't know the answer . please forgive me. actually I can't understand the problem ...

Step-by-step explanation:

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