Use the identity
Then
Hello, dhiab!
I'm getting a totally different answer . . . What's going on?
Find
Square [2]: .
Divide [1] by [3]: . .
. . Therefore: .
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
I suspect the problem is in the given equations.
Given a system of two equations, there should be two variables.
Is there a typo, dhiab?