How do you solve the simultaneous equations #x^2 + y^2=29# and #y-x=3#?
Use the second equation to provide an expression for
Then substitute this expression for
Divide both sides by
So the two solutions
Since you have both
You want to combine these two equations into one equation with a single variable, solve it and then solve for the other variable. An example on how to do this goes like this:
We can solve for