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Question
Write the following expression in terms of α + β and αβ
(3α – 1) (3β – 1)
Sum
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Solution
(3α – 1) (3β – 1) = 9αβ – 3α – 3β + 1
= 9αβ – 3(α + β) + 1
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Chapter 3: Algebra - Exercise 3.14 [Page 122]
