15(5x-4)^2-10(5x-4)
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®15 ( 5x - 4 )^2 - 10( 5x - 4)
=15( 5x - 4 )( 5x - 4) - 10( 5x - 4)
=( 5x - 4 ) { 15 (5x - 4 ) - 10 }
=( 5x - 4 ) ( 75x - 60 - 10 )
= (5x - 4 ) (75x - 70 )
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=15( 5x - 4 )( 5x - 4) - 10( 5x - 4)
=( 5x - 4 ) { 15 (5x - 4 ) - 10 }
=( 5x - 4 ) ( 75x - 60 - 10 )
= (5x - 4 ) (75x - 70 )
__________________
" hope helps "
__________________
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