C-03-Q024mediumsingle_mcq
- a
- b
- c
- d
ব্যাখ্যা
Squaring a sum of three terms gives each term squared plus twice every distinct pairwise product: . The three cross terms each appear with a factor of 2.
Squaring a sum of three terms gives each term squared plus twice every distinct pairwise product: . The three cross terms each appear with a factor of 2.