@sonukg4india 2⁴⁸ = 8^(a²) √a + 1/√a = ? 2⁴⁸ = (2³)^(a²) = 2^(3a²) 48 = 3a² 16 = a² a = 4 or a = -4 <== rejected √a + 1/√a = √4+1/√4 = 2+½ = 5/4 <== #answer Verify: 2⁴⁸ = 8^(4²) 2⁴⁸ = 8¹⁶ 2⁴⁸ = (2³)¹⁶ 2⁴⁸ = 2⁴⁸ ✓
@sonukg4india Oops! The answer should be 5/2, not 5/4.