Question

Which inequality represents all values of x for which the quotient below is defined?A.x -1B.x 1C.x < -1D.x > 1

Answer 1

Given:

$\sqrt{15(}x-1)\div\sqrt{2x^2}$

Required :

To calculate which option is correct

Explanation:

$\begin{gathered} in\text{ the range of real numbers, the even root sign cannot be negative} \\ \\ so\text{ 15\lparen x-1\rparen}\ge0 \\ \\ so\text{ }x\ge1 \\ \\ And\text{ 2x}^2\ge0\text{ is established} \\ \end{gathered}$

Required answer:

Option B