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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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