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secondary 2 | Maths
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Date Posted: 3 years ago
Views: 312
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Date Posted:
3 years ago
(t - 1)² - 9
= (t - 1)² - 3²
= (t - 1 + 3)(t - 1 - 3)
= (t + 2)(t - 4)
= (t - 1)² - 3²
= (t - 1 + 3)(t - 1 - 3)
= (t + 2)(t - 4)
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