Math, asked by architectsavita, 1 month ago

( 7m −3n) ² + 84mn = ( 7m + 3n) ²

Answers

Answered by piyush876670

1

the answer is given in the photo . I hope that it would be correst

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Answered by jevelin

4

Answer:

Heya your answer

(7m+3n)²

Step-by-step explanation:

(7m-3n)²+84mn

49m²+9n²-42mn-84mn

49m²+9n²+42mn

(7m)²+(3n)²+(2)(7m) (3n)

=(7m+3n)²

therefore (7m-3n)²+84mn=(7m+3n)²

Hope it's will help u

$answer \: by \: eric \: taeyong$

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