GMAT Math : Solving quadratic equations

Study concepts, example questions & explanations for GMAT Math

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Example Questions

Example Question #401 : Algebra

Solve for :

Possible Answers:

Correct answer:

Explanation:

We start by splitting the numerator into two expressions, and factoring them:

From there, we can pull (z-15) out of the numerator:

 

so we are left with z-15.

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