Question

|x+1| · (|x+1|-5) ≤ 0
dau 20 de puncte

Answer 1

|x+1|*(|x+1|-5)≤0
|x+1|≤0
|x+1|-5≥0
|x+1|≥0
|x+1|-5≤0
x+1=0
|x+1|-5 ≥0
|x+1| ≥0
|x+1|-5≤0
x=-1
|x+1|-5 ≥0
|x+1| ≥0
|x+1|-5≤0
x=-1
|x+1|≥5
|x+1|≥0
|x+1|-5≤ 0
x=-1
x+1≥5
x+1-5≤-5
|x+1|≥0
|x+1|-5≤0
x=1
x≥4
x≤-5-1
|x+1|≥0
|x+1|-5≥0
x=-1
x≥4
x≤-6
|x+1|≥0
|x+1|-5≤0
x=-1 
x nu apartine R
|x+1|≥0
|x+1|≤0
|x+1|-5≤0
|x+1|≤5
x+1≤5
x+1≥-5
x≤5-1
x+1≥-5
x≤4
x≥-5-1
x≤4
x≥-6
x apartine [-6,4] 
sper ca ain inteles :))