factorise (3x-4y) ²-25z²
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Hi ,
********************************"***
We know the algebraic identity
a² - b² = ( a + b ) ( a - b )
***********************************
Now ,
( 3x - 4y )² - 25z²
= ( 3x - 4y )² - ( 5z )²
= ( 3x - 4y + 5z ) ( 3x - 4y - 5z )
I hope this helps you .
:)
********************************"***
We know the algebraic identity
a² - b² = ( a + b ) ( a - b )
***********************************
Now ,
( 3x - 4y )² - 25z²
= ( 3x - 4y )² - ( 5z )²
= ( 3x - 4y + 5z ) ( 3x - 4y - 5z )
I hope this helps you .
:)
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