A2 Unit 7 Solving Rational Equations Assessment Take 2

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What are excluded values in rational expressions?

Back

Excluded values are the values of the variable that make the denominator equal to zero, which are not allowed in rational expressions.

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What does it mean to solve by cross-multiplying?

Back

Cross-multiplying involves multiplying the numerator of one fraction by the denominator of the other and setting the two products equal to each other.

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What is the first step in solving a rational equation?

Back

Identify and exclude any values that make the denominator zero.

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Cross-multiply to find the solution.

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What is the significance of finding excluded values in rational equations?

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Finding excluded values ensures that the solutions do not lead to undefined expressions.

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How do you check if a solution to a rational equation is valid?

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Substitute the solution back into the original equation to see if it holds true without making any denominator zero.