Sagot :
(-3x+4)(2x+7)=0
il y a deux solutions :
-3x+4=0 2x+7=0
-3x=-4 2x=-7
x=4/3 x=-7/2
il y a deux solutions :
-3x+4=0 2x+7=0
-3x=-4 2x=-7
x=4/3 x=-7/2
-3x + 4 = 0
-3x = 0 - 4
-3x = -4
x = 4/3
OU
2x + 7 = 0
2x = 0 - 7
2x = -7
x = -7/2
S = { 4/3 ; -7/2 }
-3x = 0 - 4
-3x = -4
x = 4/3
OU
2x + 7 = 0
2x = 0 - 7
2x = -7
x = -7/2
S = { 4/3 ; -7/2 }