Asked by Brittany
find all the real zeros and multiplicity of
f(x)=x^4-68x^2+256
f(x)=x^4-68x^2+256
Answers
Answered by
Reiny
x^4 - 68x^2 + 256 = 0
(x^2-64)(x^2-4) = 0
x = ± 8 or x = ± 2
take it from there
(x^2-64)(x^2-4) = 0
x = ± 8 or x = ± 2
take it from there
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