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प्रश्न
If m = -2 and n = 2; find the values of m2 + n2 - 2mn.
बेरीज
उत्तर
∴ m2 + n2 - 2mn
Put m = -2, n = 2
`= (-2)^2 + (2)^2 - 2(-2) (2)`
= 4 + 4 - (- 8)
= 8 + 8
= 16
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