Question

please answer me 7 and 8 question of maths of class 9​

Answer 1

...............................

Answer 2

Answer:

Step-by-step explanation:

(7) ans=x = 2 + √3

1/x = 1/(2 + √3) * (2 - √3)/(2 - √3)

1/x = (2 - √3)/(4 - 3)

[ (a - b)(a + b) = (a² - b²) ]

1/x = (2 - √3)

x + 1/x = (2 + √3) + (2 - √3)

x + 1/x = 2 + 2 + √3 - √3

x + 1/x = 4

(8)ans= √5-2

→ 2.236-2

→ 0.23607......