Question 93374: Try to find a quadratic equation with the roots 2 and 4?
Answer by Nate(3500)   (Show Source):
You can put this solution on YOUR website! f(x) = (x - r)(x - l)
where r and l are roots
Proof:
Roots are: (r,0) and (l,0)
0 = (r - r)(r - l) = (0)(r - l) = 0
0 = (l - r)(l - l) = (l - r)(0) = 0
roots: r = 2 and l = 4
f(x) = (x - 2)(x - 4) = x^2 - 6x + 8
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