Question

If(x^2-y^2,x+y)=(-7,7),then find the find the value of x+2y​

Answer 1

Answer:

11

Step-by-step explanation:

x^2-y^2=-7

x+y=7

y=7-x               .....1      

from 1

x^2-x^2+14x-49=-7

x=42/14

x=4

y=7-3

y=4