(5x-7y)cube+(5x+7y)cube
Answers
Answered by
19
Hi ,
*************************************
( a - b )³ + ( a + b )³ = 2[ a³ + 3ab² ]
****************************************
Here ,
a = 5x , b = 7y
( 5x - 7y )³ + ( 5x + 7y )³
= 2 [ ( 5x )³ + 3 × 5x × ( 7y )² ]
= 2 [ 125x³ + 15 x × 49y² ]
= 2[ 125 x³ + 735xy² ]
= 250x³ + 1470xy²
I hope this helps you.
: )
*************************************
( a - b )³ + ( a + b )³ = 2[ a³ + 3ab² ]
****************************************
Here ,
a = 5x , b = 7y
( 5x - 7y )³ + ( 5x + 7y )³
= 2 [ ( 5x )³ + 3 × 5x × ( 7y )² ]
= 2 [ 125x³ + 15 x × 49y² ]
= 2[ 125 x³ + 735xy² ]
= 250x³ + 1470xy²
I hope this helps you.
: )
Answered by
4
HEY MATE HERE IS YOUR [Tex]\mathbb{Answer}[/tex]
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