(7+5i)(7-5i) plz solve this frnd. This sum is from class 11 the chapter complex numbers.
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We have,
(7+5i)(7-5i)
Or (7)² -(5i)²
Or 49 - 25i²
Or 49 + 25 [ Since i=√-i, i² = -1]
Or 74
(7+5i)(7-5i)
Or (7)² -(5i)²
Or 49 - 25i²
Or 49 + 25 [ Since i=√-i, i² = -1]
Or 74
Anonymous:
Thnx frnd
Wc
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