(7x-9y) (7x-9y) simplify it to get answer
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( 7x - 9y ) ( 7x - 9y )
=> ( 7x - 9y )²
We know, ( a - b )² = a² + b² - 2ab
On applying formula, we get
=> ( 7x )² + ( 9y )² - 2( 7x × 9y )
=> 49x² + 81y² - 126xy
=> ( 7x - 9y )²
We know, ( a - b )² = a² + b² - 2ab
On applying formula, we get
=> ( 7x )² + ( 9y )² - 2( 7x × 9y )
=> 49x² + 81y² - 126xy
Answered by
10
Bonjour !!!❤❤❤
( 7x - 9y ) ( 7x -9y )
=> ( 7x - 9y )². { ( a - b ) = a² + b² - 2ab ) }
=> ( 7x )² + ( 9y )² - 2 ( 7x ) ( 9y )
=> 49x² + 81y² - 126xy
Hope it helps....✌✌
( 7x - 9y ) ( 7x -9y )
=> ( 7x - 9y )². { ( a - b ) = a² + b² - 2ab ) }
=> ( 7x )² + ( 9y )² - 2 ( 7x ) ( 9y )
=> 49x² + 81y² - 126xy
Hope it helps....✌✌
veer4038:
thank you
my pleasure
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