Question

By using suitable identity Find the value of( 3k + m ) (3k + m​

Answer 1

Aɴsᴡᴇʀ:-

( 3k + m ) ( 3k + m )

( α + b ) ( α - b ) = α ² - b ²

In which ,

α = 3k

b = m

( 3k + m ) ( 3k - (+m) ) = ( 3k )² - (+m)²

= 9k² - m²

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