The Tropic of Cancer does not pass through which of

Find the value of ‘x’ in the given expression:

(49/16)^x × (64/343)^x-1 = 4/7

If √k + (1/√k) = 8, then find the value of k + (1/k).

What is the HCF of (x³ + 3x² - x - 3) and (x³ + 4x² + x - 6)?

If, 4x + y = 10, and 2xy = 8, and 4x > y, then find the value of 64x³ – y³.

Evaluate (998)³ without multiplying directly.

If, ( a + b = 12 ) and ( a² + b² = 80 ), then find the value of (a³ + b³).  

If n = 3 + √2, then find the value of (n + 1/n)².

 If f(x) = 3x² − 7x + 5, find f(2a) − 4f(a).

If 2x + y = 10 and 3x - 2y = 5, find the value of x + y.