For what values of x is the rational expression below undefined?
x-7/2x^2-32?
a.2
b.-2
c.-4
d.-7
e.7
f.4

Question

For what values of x is the rational expression below undefined? 
x-7/2x^2-32?
a.2
b.-2
c.-4
d.-7
e.7
f.4

freckles · Answer

solve the bottom=0
2x^2-32=0  (I assume you meant (x-7)/(2x^2-32)

usukidoll · Answer

you also need to factor first before solving.

ehsan18 · Answer

its option c and f

anonymous · Answer

d

mathstudent55 · Answer

In your expression, the only thing that can cause an undefined value is division by zero.
Therefore, if the denominator of the expression equals zero, you'd be dividing by zero, which is an undefined operation. In order to find which values of x would cause division by zero, set the denominator equal to zero, and solve that equation for x. Those values of x cause the expression to be undefined. (Hint: there may be more than one answer.)

usukidoll · Answer

don't pay attention to the direct answer people... just follow what me and the 99ers are saying