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If a + (1/a) = 2, then find the value of (a⁵ + a³ + 6)/(7a – 5).

If x + y + z = 20, x² + Y² + z² = 160 and x z = y², then find the value of x z?

Evaluate (998)³ without multiplying directly.

√(9²×8 ×5²+700) = ?

If a³ — b³ = 602 and a— b = 2, then find the value of( a² + b²)

If a = 2 + √3, then the value of`(a^(6) + a^(4) + a^(2) + 1)/(a^(3))` is

(44² × 16²) ÷ (184.8 ÷ 8.4) =? × 64

If a = 2 + √3, then the value of (a⁶ + a⁴ + a² + 1)/a³ is

If x⁶ + 1 – √3x³ = 0 then x¹⁰⁸ + x⁹⁰ + 15?

If 1/(x+ 1/(y+ 1/z)) = 13/30, then find x+y+z= ?