Question

Zadanie w załączniku

Answer 1

b)

 

(x+2)²+(x+1)/3 ≤(x+2)(x-2)-(1/3) 

x²+4x+4+(x+1)/3≤x²-4-(1/3) |*3

3x²+12x+12+x+1≤3x²-12-1

13x≤-26

x≤-2

 

a)

 

(x-3)/2+(x+4)/5≥2x-2 |*10

5x-15+2x+8≥20x-20

-13x≥-13

x≤1