GMAT Quantitative Reasoning Practice Test 2

Question : 10 of 100

Marks: +1, -0

One of the solutions of the equation

x^2-x-k=5

, is -3 . What is the other solution of the equation?

Solution:

First, plug in the solution -3 to find the value of

k:(-3)^2-(-3)-k-5=0, k=7

. Then solve:

x^2-x-7-5

to find the second solution:

x=4

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