Question

a)(X+1)la a doua - (x+3) la a doua > egal decât (x-1) la a doua (x-2) la a doua

Va rog dau coroana

Answer 1

x^2 +2x + 1 - x^2 -6x -9 >= x^2 -2x + 1 - x^2 +4x - 4 
-4x -8 > = 2x -3
-8 + 3 >= 2x +4x 
-5 >= 6x 
x <= -5 :6 
x <=  - 0,8(3) 
x = { - inf.......-1}