Simplify (x+sqrt(y))(x-sqrt(y)) & use result to derive a method for avoiding cancellation when solving quadratic equations.
So (x+sqrt(y))(x-sqrt(y)) simplified is x²-y but where do I go from there?
Simplify (x+sqrt(y))(x-sqrt(y)) & use result to derive a method for avoiding cancellation when solving quadratic equations.
So (x+sqrt(y))(x-sqrt(y)) simplified is x²-y but where do I go from there?