Precalculus: The roots of f(x) are 3, 4, and 2. What are the roots of f(x^2+1) ?

[sbonamm603]

The roots of f(x) are 3, 4, and 2. What are the roots of f(x^2+1)

 

[tkhunny]

Have you considered x^2 + 1 = 3?