bjr
( x - 9 ) ( 5 + 2x ) + ( 3x + 1 ) ( 5 + 2x )
= (5 + 2x) [ (x - 9) + (3x + 1) )]
= (5 + 2x) (x - 9 + 3x + 1)
= (5 + 2x) (4x - 8)
= 4 (5 + 2x) (x - 2)
Bonjour,
Factoriser :
= (x-9)(5+2x)+(3x+1)(5+2x)
= (5+2x)(x-9+3x+1)
= (5+2x)(4x-9+1)
= (5+2x)(4x-8)
= (5+2x)×4(x-2)
= 4(5+2x)(x-2)
Bonne journée.
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bjr
( x - 9 ) ( 5 + 2x ) + ( 3x + 1 ) ( 5 + 2x )
= (5 + 2x) [ (x - 9) + (3x + 1) )]
= (5 + 2x) (x - 9 + 3x + 1)
= (5 + 2x) (4x - 8)
= 4 (5 + 2x) (x - 2)
Bonjour,
Factoriser :
= (x-9)(5+2x)+(3x+1)(5+2x)
= (5+2x)(x-9+3x+1)
= (5+2x)(4x-9+1)
= (5+2x)(4x-8)
= (5+2x)×4(x-2)
= 4(5+2x)(x-2)
Bonne journée.