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Restrictions in Algebraic Fractions
Grade Level
GMAT
Q.106 Restrictions in Algebraic Fractions
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For the original expression (z
2
- 5z)/(z
2
- 25) + (z - 5)/(2z + 10), which set contains every z-value that makes at least one denominator zero?
A
No values must be excluded
B
z = -5 and z = 5
C
z = 5 only
D
z = 0 only
E
z = -5 only
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