Question

Solve for x.

x2≥−4



A x≥−2
B x≤−8
C x≥−8
D x≤−2

Answer 1

The absolute value of x is written as \displaystyle |x|∣x∣. It has the following properties:

If

x

≥

0

,

then

|

x

|

=

x

.

If

x

<

0

,

then

|

x

|

=

−

x

.

For real numbers \displaystyle AA and \displaystyle BB, an equation of the form \displaystyle |A|=B∣A∣=B, with \displaystyle B\ge 0B≥0, will have solutions when \displaystyle A=BA=B or \displaystyle A=-BA=−B. If \displaystyle B<0B<0, the equation \displaystyle |A|=B∣A∣=B has no solution.

Answer 2

the answer is c because I just did this answer and I got it correct