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Sagot :

AIHOA2212P0EHOD

x =0

ou 4x - 7 =0

4x =7

x= 7/4

ou 9-2x=0

-2x = -9

x= 9/2

ou 8-2/7x =0

-2/7x = -8

7x= -2/-8

7x= 2/8

x = 1/28

Il y en a 4 solutions

VINS

bonjour

x ( 4 x - 7 ) ( 9 - 2x ) ( 8 - 2 x /7 ) = 0

soit x = 0

soit  4 x - 7 = 0  ⇔ x ) 7/4

soit  9 -2 x = 0  ⇔ x = 9/2

soit  8 - 2 x / 7 = 0  ⇔  28

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