Question

fir class 9th
ICSE plz Answer it

Answer 1

It is given that x

(i)

Cube both sides of the given equation,

(x - -1/-)

3

6³

x³ x3 3 × x × ¹¹ (x − ¹) = 216

x³ x3 3 (6) = 216

x³ 1 18 = 216

x³ 1 23 = 234

(ii)

Square both sides of the given equation,

2 (x - ²)² = 6² x² x² + 1 - 2 × x × ¹ = 36 36 1 + T

x² + ²/2 = 38

Answer 2

Answer:

x²+1/x²=38

x³+1/x³=74√10