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