Question

The possible values of $x^2+6$ is (x is real)

• A. ( 0, 4]
• B. (4, ∞)
• C. (0, 4)
• D. [ 4, ∞)

Answer 1

Answer: (D)

[ 4, ∞)

We know that $x^2$ ≥ 0

$\Rightarrow$ $x^2+6$ ≥ 6

So, possible values of $x^2+6$ are [ 6,$\infty$) .