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Question
Factorise the following by splitting the middle term:
15a2 - 14a - 16
Sum
Solution
15a2 - 14a - 16
= 15a2 - 24a + 10a - 16
= 3a(5a - 8) + 2(5a - 8)
= (5a - 8)(3a + 2).
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