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प्रश्न
If m2 = -2 and n = 2; find the values of: mn + nm
बेरीज
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उत्तर
mn + nm
m = -2, n = 2
= (-2)2 + (2)-2
`= 4 + 1/2 xx 1/2`
`= (4xx4)/(1xx4) + 1/4`
`= (16+1)/4 = 17/4 = 4 1/4`
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