Which of the following describes all values of x for which 4-x^2 ≥ 0 ?	Select the correct option
A) x ≥ 1  B) x ≤ -1  C) 0 ≤ x ≤ 1  D) x ≤ -1 or x ≥ 1  E) -2 ≤ x ≤ 2
4-x^2 &gt;= 0 ---&gt; x^2-4&lt;=0   --&gt; (x+2)(x-2)&lt;=0   Above equation true for   i) x+2&lt;=0 and x-2&gt;=0 ---&gt; x&lt;= -2 and x&gt;=2 ---&gt; this is not possible ---Strike out this solution   ii) x+2&gt;=0 and x-2&lt;=0 ---&gt; x&gt;=-2 and x&lt;=2 --&gt; -2&lt;=x&lt;=2   Answer -2 ≤ x ≤ 2
<result>E</result>
Which of the following describes all values of x for which 4-x^2 ≥ 0 ?