Q. Simplify?
(7m 3n)^2 - (7m - 3n)^2?

Pls answer all the parts and fast

first use (a+b)^2 identity and(a-b)^2 identity to simplify both the terms than finally use (a+b)(a-b)=a^2-b^2 identity to simplify the answer.
  • -1
(7m+3n)^2 - (7m-3n)^2
  • -2
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