Mathematics · Factorisation
The factorised form of r 2 - 10r + 21 is:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1(r + 7)(r + 3)
- 2(r - 7)(r + 3)
- 3(r - 7)(r - 3)✓
- 4(r - 1)(r - 4)
Correct answer
(r - 7)(r - 3)
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