Question

What are the solutions of the equation x4 + 6x2 + 5 = 0? Use u substitution to solve.

x = i and x = iStartRoot 5 EndRoot
x = plus-or-minus i and x = plus-or-minus iStartRoot 5 EndRoot
x = plus-or-minus StartRoot negative 1 EndRoot and x = plus-or-minus StartRoot negative 5 EndRoot
x = plus-or-minus Negative 1 and x = plus-or-minus -StartRoot 5 EndRoot

Answer 1

its B

Explanation:

took the test

Answer 2

Answer: x = +/- i and x = +/- i * sqrt(-5)