The World Deepest trench ‘Mariana Trench ’

If     = 4 then

If √c + (1/√c) = 7, then find the value of c + (1/c).

If (a + b) = 7 and ab = 11, then find the value of (a² + b²).

(m - 4) ² + (n + 5) ² + (p - 3) ² = 0, then find the value of 2m + 3n - p.

Length of each side of a rhombus is 13 cm and one of the diagonal is 24 cm. What is the area (in cm²) of the rhombus?

If x² - 3x + 2 is a factor of, x⁴ - px² + q, then (p, q) =

(15 x 15 x 15 + 8 x 8 x 8)/(15 x 15 -15 x 8 + 8 x 8) = ?

If {x + (1/x)} = 4, then find the value of {x² + (1/x²)}

If a, b and c are integers such that a ²  + b ²  + c ²  = 228, a + b + c = 26 and b = c, then find the value of a?