- #1
Nelo
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Homework Statement
Determine the equation in simplied form for the family of quartic functions with zeroes of..
5 (order 2) and -1± 2√ 2
Homework Equations
The Attempt at a Solution
so.. (x-5)^2 (x-1+2√2) (x-1-2√2)
(x-5) (x-5) (x-1+2√2) (x-1-2√2)
Would be all of it expanded, but I don't know how to foil on this.. there's 2 terms on the left side brackets and 3 terms on the right side brackets.. (x) (-1) (2√2) , I know that X will become x^4, but i don't get how to continue using foil, can anyone explain?
We never learned this.. so.. i also know that the plusminus root is (x+1)^2 + 8 if simplified into that form..