Question

1. Rezolvaţi în R inecuațiile:
a) 2(x + 3) SX-5
b) 3(x - 2) < 2(x + 1)
c) 6(x - 1) >-4(x + 2)
d) 9(x + 1) 2-7(x + 2)​

Answer 1

Salut !

Răspuns:

a) 2(x + 3) <= x-5

2x + 6 <= x-5

2x-x<=-5-6

x <= -11

b) 3(x - 2) < 2(x + 1)

3x - 6 < 2x + 2

3x - 2x < 2 + 6

x < 8

c) 6(x - 1) >-4(x + 2)

6x - 6 > -4x - 8

6x + 4x > -8 + 6

10x > -2

x > -2/10

d) 9(x + 1) >= -7(x + 2)

9x + 9 >= -7x - 14

9x+7x >= -14 - 9

16x >= -23

× >= -23pe16