Réponse :
Explications étape par étape
Bonsoir
(3x + 2)^2 << (11x + 1)^2
(3x + 2)^2 - (11x + 1)^2 << 0
(3x + 2 - 11x - 1)(3x + 2 + 11x + 1) << 0
(-8x + 1)(14x + 3) << 0
-8x + 1 = 0 ou 14x + 3 = 0
8x = 1 ou 14x = -3
x = 1/8 ou x = -3/14
x..........|-inf...........(-3/14)......,.....(1/8).........+inf
-8x+1...|........(+)..................(+).......o.....(-)..........
14x+3..|........(-).........o........(+)..............(+).........
Ineq....|.........(-)........o.........(+)......o.....(-).........
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Réponse :
Explications étape par étape
Bonsoir
(3x + 2)^2 << (11x + 1)^2
(3x + 2)^2 - (11x + 1)^2 << 0
(3x + 2 - 11x - 1)(3x + 2 + 11x + 1) << 0
(-8x + 1)(14x + 3) << 0
-8x + 1 = 0 ou 14x + 3 = 0
8x = 1 ou 14x = -3
x = 1/8 ou x = -3/14
x..........|-inf...........(-3/14)......,.....(1/8).........+inf
-8x+1...|........(+)..................(+).......o.....(-)..........
14x+3..|........(-).........o........(+)..............(+).........
Ineq....|.........(-)........o.........(+)......o.....(-).........