Question

Which of the following values of x makes the rational expression below equal to zero?

Answer 1

To make a rational expression equal to zero equate its numerator (up) by 0 and find the value of x

Since the given rational expression is

`(2x+16)/(x+5)`

Since the numerator is (2x + 16), then equate it by 0 and solve to find x

`2x+16=0`

Subtract 16 from both sides

`\begin{gathered} 2x+16-16=0-16 \\ 2x=-16 \end{gathered}`

Divide both sides by 2

`\begin{gathered} (2x)/(2)=(-16)/(2) \\ x=-8 \end{gathered}`

The answer is B