Question

am mare ajutor va rog ​

Answer 1

a) 2x=11-5, 2x= 6, x= 3

b) 2x+1=4x, 2x= 1, x= 1/2

c) |2x+3|= 5, 2x+3 = 5, 2x= 2, x= 1 sau

2x+1=-5, 2x=-6, x=-3

d) 2x+4x-4= 5x, 6x-5x=4, x= 4

e) 2+2(2+2x+4)=14

2(2x+6)=12, 2x+6= 6, 2x=0, x=0

2) a) x+15x+15=10x (aducem la acelasi numitor:5)

16x-10x= -15, 6x=-15, x=-15/6=-5/2

b) √200=10√2, √162= 9√2

10√2-x=9√2, x=10√2-9√2=√2

c) 3x-1#0, x#1/3

6x+15= 6x-2, nu exista solutie pt ca 15#-2

d) x-2=0 sau 3+2x= 0

x-2=0, x=2 sau

3+2x=0, x=-3/2