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Specialist2025 NHT Exam 2 Section A · Q3CAS active1 mark

Partial fractions with integer factors

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How many integer values of $a$ can $\frac{1}{x^2 + ax - 21}$ be expressed in the form $\frac{B}{x + b} + \frac{C}{x + c}$ ,

where $b$ and $c$ are integers and $B, C \in \R$ ?

1 mark

A2B3C4D5

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