6. If m= -2 and n = 2; find the value of :
(i) m2 + n2 - 2mn
, (ii) m + nm
(iii) 6m-3 + 4n2
(iv) 2n3 - 3m
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1) 2*-2 + 2*2-2*-2*2 = 8
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