x^2 - 17x-84 factorise urgent
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Answered by
33
x² - 17x - 84
=> x² - ( 21 - 4 ) x - 84
=> x² - 21x + 4x - 84
=> x( x - 21 ) + 4( x - 21 )
=> ( x - 21 ) ( x + 4 )
=> x² - ( 21 - 4 ) x - 84
=> x² - 21x + 4x - 84
=> x( x - 21 ) + 4( x - 21 )
=> ( x - 21 ) ( x + 4 )
Answered by
14
HELLO MATE☺
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⏩x^2-17x - 84
=> x^2 - 21x + 4x - 84
=> x(x-21) + 4(x-21)
=>(x+4) (x-21)
So , x = -4 & x = 21✔✔
_____________________________⭐⭐⭐
HOPE IT HELPS U✌✌
^_^
_____________________________⭐⭐⭐
⏩x^2-17x - 84
=> x^2 - 21x + 4x - 84
=> x(x-21) + 4(x-21)
=>(x+4) (x-21)
So , x = -4 & x = 21✔✔
_____________________________⭐⭐⭐
HOPE IT HELPS U✌✌
^_^
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