PSAT Math : How to find the solution of a rational equation with a binomial denominator

Study concepts, example questions & explanations for PSAT Math

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Example Questions

Example Question #1 : How To Find The Solution Of A Rational Equation With A Binomial Denominator

Solve for .

Possible Answers:

Correct answer:

Explanation:

Factor the expression

numerator: find two numbers that add to 2 and multiply to -8 [use 4,-2]

denominator: find two numbers that add to 5 and multiply to -14 [use 7,-2]

 

new expression:

Cancel the  and cross multiply.

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