Math, asked by laxmivenkat782, 3 months ago

(3m - n)²-(m - 2n)²

Answers

Answered by renusankhala676

0

Answer:

by the formula (a-b)^2

=(9m^2+n^2-6mn)-(m^2+4n^2-4mn)

=9m^2-m^2+4n^2+n^2-6mn-4mn

=8m^2+5n^2-10mn

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