anonymous
  • anonymous
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
Mathematics
jamiebookeater
  • jamiebookeater
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freckles
  • freckles
solve the bottom=0 2x^2-32=0 (I assume you meant (x-7)/(2x^2-32)
UsukiDoll
  • UsukiDoll
you also need to factor first before solving.
Ehsan18
  • Ehsan18
its option c and f

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anonymous
  • anonymous
d
mathstudent55
  • mathstudent55
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
  • UsukiDoll
don't pay attention to the direct answer people... just follow what me and the 99ers are saying

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