√(2.25) + √(0.0064) + √(2.89) + 1 is equal to:

If x² + 1/x² = 51, then (x − 1/x) is equal to

If 1² + 2² + 3² + ... + 10² = 385, then 3² + 6² + 9² + ... + 30² is equal to:

The value of √(0.36/0.30) is approximately equal to

If the product of the roots of the equation 3kx^2 - 25kx + k + 8 = 0 is 3, then k is

Calculate the square root of: [(0.081 / 0.0064) × (0.484 / 6.25) × (2.5 / 12.1)]