If x+ =3, then find the value of x⁶+.

5

Evaluate :

(i) 25³ – 75³ + 50³

(ii) 48³ – 30³ - 18³

(iii)

(iv) (0.2)³ – (0.3)³ + (0.1)³

1

If x+ =3, then find the value of x²+.

3

If a+b=7 and ab=12, find the value of a²+b².

4

If a-b=5 and ab=12, find the value of a²+b².