Question

Repede !!!!!
b,c,d
Va rog

Answer 1

b).-x-x mai mic = 5-7
-2x mm=-2
xmm=1
x apartine (1,0,-1.....)

c).2x-6+7 mai mare 3x+1
2x-3x mm 1-1
x mm 0
x apartine (-1,-2....)

(x+1)=x la 2 +2x+1
xpătrat +2x+1 mai mic x pătrat -x-12 +3
x la 2 -x la 2+2x+x m m -12-1+3
3x m m -9
x m m -3

x apartine (-2,-1,0...)