4x+4=0
x=- 1
& lt2>a is not equal to 0.
4? -4*4*a=0
a= 1
x=-2
To sum up: a=0, x=- 1 or a= 1, x=-2.
2. It should be [2a, a? -a]?
If so, then:
Answer? -a & gt; 2a
Answer? -3a & gt; 0
a(a-3)>0
A>3 or a<0