or
or .
Hi
I have a quadratic -5x^2 + 15x +1 = 0
I can find x where y=0, (-54.1 or +24.1)
But how do I find x when y = 11
Factorising, completing the square and using the quadratic formula are
all about finding x when y = 0. But what do you do when you want y=
some other value?
Angus