Question

Calcule as raizes das funções abaixo :
A - F(x)=3x+4
B-F(x)=3x+6
C-F(x)=-2x+8
D-F(x)=-x-48
E-F(x)=x+43
F-F(x)=5x-40
G-F(x)=-3x+20
H-F(x)=-6x+44

Answer 1

Olá endy!!!

Basta igualar a zero cada uma delas e resolver....mãos a obra:

 

a) 3x+4 =0  >>>>>>>>>3x = -4....................X = - 4/3

 

b) 3x+6 =0  >>>>>>>>>3x = -6....................X = - 6/3 >>>>>>X = - 2

 

c) -2x+8 =0  >>>>>>>>>-2x = -8....................X = - 4/-2>>>>>X = 2

 

d) -x - 48 =0  >>>>>>>>>-x = 48....multiplica tudo por (-1)....X = - 48 >>>>>>X = - 48

 

e) x+43 =0  >>>>>>>>>x = - 43

 

f) 5x - 40 =0  >>>>>>>>>5x = 40........X = 40/5 >>>>>>X = 8

 

g) -3x +20 =0  >>>>>>>>>-3x = -20.....X = - 20/-3 >>>>>>X = 20/3

 

h) -6x +44 =0  >>>>>>>>>-6x = - 44.......X = - 44/-6 >>>>>>X = 22/3

 

é isso UFA!!!!