Question

What is the answers to the question: Which rational expression is undefined when x = 0?

Answer 1

Answer:

option D

$\frac{4x-8}{-2x^2}$

Step-by-step explanation:

An expression is undefined when you get division by zero or in simple words when denominator is zero.

Now we will solve each expression one be one by plugging value of x = 0

1)

$\frac{5x^2-4}{3x-3}$

$\frac{5(0)-4)}{3(0)-3}$

-4/-3 = 4/3

2)

$\frac{6x^2}{9x-3}$

$\frac{6(0)}{9(0)-3}$

0/-3 = 0

3)

$\frac{8x+6}{-x^2+1}$

$\frac{8(0)+6}{-0+1}$

6/1

6

4)

$\frac{4x-8}{-2x^2}$

$\frac{4(0)-8}{-2(0)}$

-8/0

undefined

Answer 2

Answer:

D

Step-by-step explanation: