Math, asked by raji90, 9 months ago

find the product (7a + 9b)(7a - 9b)

Answers

Answered by rajnitiwari192003

3

Answer:

using (a+b) (a-b)= a²-b²

(7a+9b)(7a-9b)

(7a)²-(9b)²

49a²-81b²

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