Question

A+b = 5 and a^2=b^2 = 15 . find the value of a - b

Answer 1

Answer:√5

Step-by-step explanation:

(a+b)²=a²+b²+2ab

25=15+2ab

10=2ab

For (a-b)²=a²+b²-2ab

(a-b)²=15-10

(a-b) ²=5

(a-b)=√5