MCQ
The factors of $a^2 + b - ab - a$ are:
- A$(a + 1)(a - b)$
- ✓$(a - 1)(a - b)$
- C$(a + b)(a - 1)$
- DNone.
✓
Answer
Correct option: B.
$(a - 1)(a - b)$
B. $(a - 1)(a - b)$
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