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Qqn pourrait m'aider pour resoudre ss équations s'il vs plait
a) (x-11)(-x+5x)=0
b) (4-9x)(2-5x)=0
c) (7-x)(3x-4)=0
d) (-x+9)(-8-11x)=0
e) x(x-6)=0
f) -6x(3x-1)=0
g) (1-2x)(1+2x)=0
h) (6-x)au carré =0


Sagot :

a) (x-11)(-x+5x)=0
(x-11)(+4x) =0
4x(x-11) =0

4x =0                                  x-11 =0   
x = 0/4 = 0                         x = 11
        
b) (4-9x)(2-5x)=0

4-9x =0                    2-5x =0
-9x = -4                      -5x = -2
x = -4/-9 = 4/9              x = -2/-5 =2/5

c) (7-x)(3x-4)=0

7-x =0                                3x-4 =0
-x = -7                              3x = 4
x = 7                                     x = 4/3

d) (-x+9)(-8-11x)=0

-x+9 =0                         -8 -11x =0
-x = -9                                 -11x = 8
x = 9                                        x = - 8/11

e) x(x-6)=0

x =0                  x-6 =0
                         x = 6

f) -6x(3x-1)=0

-6x =0                                    3x-1 =0
x = 0/-6                                   3x = 1
x =0                                         x = 1/3

g) (1-2x)(1+2x)=0

1-2x =0                                          1+2x =0
-2x = -1                                               2x = -1
x = -1/-2                                                 x =  -1/2
x =1/2

h) (6-x)au carré =0


6-x =0
6 =x
x =6