1. ## Equation problem

Hello! I'm having trouble on solving this equation $(x+y\sqrt5)^2=7+3\sqrt5$

Thank you!

2. Originally Posted by GreenMile
Hello! I'm having trouble on solving this equation $(x+y\sqrt5)^2=7+3\sqrt5$

Thank you!
Solving for what? You can't solve it directly since we have two unknowns and one equation.

To express x in terms of y go with completing the square

3. I'm sorry, it says: Find all $(x,y)$ pairs which satisfy:
$(x+y\sqrt5)^2=7+3\sqrt5$

Thank you.