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If $\Delta$ is an operation such that for integers a and b we have
a $\Delta$ b = a × b – 2 × a × b + b × b (–a) × b + b × b
then find (i) 4 $\Delta$ ( – 3)
(ii) ( – 7) $\Delta$ ( – 1)
Also show that 4 $\Delta$ ( – 3) $\neq$ (– 3) $\Delta$ 4
and ( – 7) $\Delta$ ( – 1) $\neq$ ( – 1) $\Delta$ (– 7)

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