Question

plz solve fast please​

Answer 1

ANSWER = -8√5

a = 9 - 4√5

(a - 1 / a ) = (9-4√5) - (1/(9-4√5))

= (9-4√5) -[ (9+4√5)/(9² - (4√5)²])

= (9-4√5) - (9+4√5) / (81-80)

= (9-4√5) - (9+4√5)

= 9- 4√5 - 9 - 4√5

= -2(4√5)

= -8√5

Formulas used

• (a+b)(a-b) = a² - b²

• -(a+b) = -a - b

• 1/(a-b) = (a+b)/(a²-b²)

Answer 2

Answer:

kya kh rha ho ?

nhi khana kya chta ho