Question

if x/y=2/5 then find the value of (x+y)/(x-y)​

Answer 1

Answer:

given : x/y =2/5

to prove : (x+y)(x-y)

Step-by-step explanation:

1. (x+y)(x-y)
2. we take x= 2/5y
3. (2/5y+y)(2/5y-y)
4. (2y+5y/5)(2y-5y/5)
5. $4 {y}^{2} - 25 {y}^{2} \div 25$
6. -21y^2/25=0
7. -21y^2= 0
8. y = 0
9. then x = 0