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solve the following by factorization...
(a+b)² x² - 4abx - (a-b)² = 0
sol... x = 1 , x = -(a-b)/(a+b)...
acc. to RD Sharma (2013)
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Answer: United Nations Development Programme (UNDP) has used the criterion of Human Development Index to measure the development of countries. HDI is calculated on the basis of: Per capita income : When the total national income of the country is divided by its population, we get the per capita income.
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