If the real variables x, y, and z, and the non-zero real constants p, q, and r satisfy the equation: xpq - r2 = yqr - p2 = zrp - q2 Then find the value of px + qy + rz.

If the shares of Raju, Ankit, and Anuj in a total sum of 1 are 0.625, 0.04, and 0.229 respectively, and the remaining share belongs to Ranjan, then the share of Ranjan is:

What is the square root of (7 + 2√10)?

If x2 + 1x2 = 7, then what is the value of x + 1x?