What are the solutions of the equation x4+3x2+2=0? use u substitution to solve

x = ± i , x = ±√2i are solution .

Step-by-step explanation:

Given : , use u substitution to solve.

To find : what are the solutions of the equation .

Solution : We have given that .

Let consider = u .

Substitute u =   in given equation .

.

On factoring

.

Taking common

u( u+2) +1 (u+2) = 0.

On grouping

(u+1) (u+2) =0

Now, u+1 = 0 ⇒ u = -1.

         u+2 = 0 ⇒ u = -2.

In term of x, plugging = u.

= -1   ;   = -2.

taking square root both side

x = ± i

x = ±√2i.

Therefore, x = ± i , x = ±√2i are solution .

well what you have to do is divide 84 by 6 so theanswer

step-by-step explanation:

84 divided by 6 = 14

and that lightbulb changing party must be freaking lit!