Question

if a power 2 +b power 2 = 99,ab =9 find the value of a-b is??​

Answer 1

Answer:

9

Step-by-step explanation:

a power 2 +b power 2 = 99,

ab =9

(a+b )^2 = a power 2 +b power 2 +2ab

= 99+18 = 117

(a-b)^2 = (a+b )^2 - 4ab = 117- 36=81

a-b = 9