Question

Please help with the second question below.

The answers are A., B., D., and E.

Answer 1

The answers A,B,D and E are verified.

Step-by-step explanation:

We have equation, x⁴ - 3 x² + 2 = 0

Substituting y = x²

So equation is y²- 3 y+ 2 = 0

=> (y-1)(y-2) = 0

y = 1 or y = 2

So we have x² = 1 or x² = 2

=> x = 1 , x = -1 ,
`x=√(2)` or
`x=-√(2)`

So the answers are A,B,D and E.