Aidez moi svp c’est pour demain

Bonsoir ,

A) 5x +1 = -7
5x = -8
X = -8/5
F(-8/5) = -7

5x+1= 0
5x = -1
X = -1/5
F(-1/5) = 0

B) -2x -4 = -3
-2x = 1
X = -1/2
= -0,5
G(0,5) = -3

-2x -4 = 3
-2x = 7
X = -3,5
G(-3,5) = 3

C) f(1) = 5*1 + 1 = 6
F(1) = 6

G(1) = -2*1 -4 = -6

D) non car 6 et -6 sont différents

E)5x + 1 = -2x -4
7x = -5
X = -5/7
F(x) = G(x) que quand x = -5/7

☺️