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List the values of the variables for which the rational expression is undefined.$\frac{-2 d}{6 c}$
The expression is undefined when $c=0$
Algebra
Chapter 2
THE RATIONAL NUMBERS
Section 2
Simplifying Rational Expressions
Fractions and Mixed Numbers
Decimals
Equations and Inequalities
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Okay, So this question here gives us this expression negative to D over six a six C and one. They want to know when what variables caused this expression to be undefined. And that's always when the denominator is equal to zero. So we just set six c equal to zero. Um, you can divide but both sides by six. But hopefully you know that any number multiplied times zero will be zero. So when C is equal to zero, this expression will be undefined.
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