The areas of three adjacent faces of a cuboid are 60

If p = 24 - q - r and pq + r(q + p) = 132, then find the value of (p² + q² + r²).

((99.9 - 20.9)² + (99.9 + 20.9)² )/(99.9 x 99.9 + 20.9 x 20.9) = ?

Find the value of the given expression-

(4^x+4 -5× 4^x+2) / 15×4^x – 2²×4^x

If 4x² + y² = 40 and x y = 6, then find the value

of 2x + y?

If p = 40 - q - r and pq + r(q + p) = 432, then find the value of (p² + q² + r²).

47.98 × 4.16 + √325 × 12.91 + ? = 79.93 × 5.91

If x + y = 4 and (1/x) + (1/y) = 24/7, then the value of (x³ + y³).

If a = (√2 - 1)^1/3, then the value of (a-1/a)³ +3(a-1/a) is: