Question 7 • Algebra: Concepts and Connections
A value is excluded when it makes the denominator zero. In choice B, substituting x = −5 gives (−5)² + 5(−5) = 25 − 25 = 0. In choice E, the denominator becomes (−5)² − 25 = 25 − 25 = 0, so −5 is excluded for both expressions.
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