The pair of equations 3^(x+y) = 81, 81^(x-y) = 3 has (a) no solution (b)...

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The pair of equations 3^(x+y) = 81, 81^(x-y) = 3 has (a) no solution (b) unique solution (c) infinitely many solutions (d) x = 2 1/8, y = 1 7/8 class 10 mathematics Chapter 3 PAIR OF LINEAR EQUATIONS IN TWO VARIABLES important question CBSE BOARD EXAM 2025-26

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