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Question

If ∆ is an operation on integers such that a ∆ b = −a + b − (−2) for all integers a, b. Find the value of

(i) 4 ∆ 3
(ii) (−2) ∆ (−3)
(iii) 6 ∆ (−5)
(iv) (−5) ∆ 6

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