you're missing a sign.

do you mean or ?

for the second part, you can expand the general form of: , and see how relate to each other. that's one way. you could also use the quadratic formula to find the roots, and then equate one to the reciprocal of the other and try to solve. things like that.

or perhaps you can use the nature of roots to solve it. if and are the roots of the equation , then and .

then plug in and see what happens.

just play around with it. tell us your findings