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Question

If a = -9 and b = -6, show that (a-b) (b-a)

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Solution

verified
Verified by Toppr

From the Commutative law of Subtraction
Left hand side (LHS),



(Take out the –ve sign outside and do subtract smaller from bigger number)


Right hand side (RHS),



(Take out the –ve sign outside and do subtract smaller from bigger number)


By comparing LHS and RHS

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