In microwave oven microwaves are emitted by

If x ≠ 0 and x − 1/x = 5, find:

(i) x² + 1/x²

(ii) x³ − 1/x³

Find the largest 5-digit number that is divisible by 12, 15, 18, and 24. Also, what is the remainder when this number is divided by 11?

If z + (1/z) = 2 then find z¹⁰⁵ + 1/(z¹⁰⁵) = ?

√(9²×8 ×5²+700) = ?

If x = 21, then the value of x⁵ - 22x⁴ + 22x³ - 22x² + 22x - 1 is

 = ?

 Solve: 5 – 3x > 2x + 10

If (a²  + 1/a² ) = 66, then find the value of (a³  – 1/a³ ).

If  a²+2 = 2a

then find a⁴ - a³ + 2a² -2a+ 9 = ?