Question

solve
W^4-4w²-2=0
cant figure out what i am doing wrong
u=w²
u²-4u-2=0
u=2-(sqrt)6 or u=2+(sqrt)6
w²=2-(sqrt)6 or w²=2+(sqrt)6
w=(sqrt)2+(sqrt)6, -(sqrt)2+(sqrt)6
tell me what i am doing wrong and how to fix it plz

Answer 1

you got your variables mixed up. or is it both W capital. or one capital one lower case w.???

Answer 2

all lower case sry

Answer 3

well since you have the equation. why not use what you have and plug it in to the Quadratic Formula.

Answer 4

show me

Answer 5

too much to type it. look at the link. it's a picture. couple steps of where i think you went wrong.
http://clip2net.com/s/Xycs

Answer 6

then w=2.1094
and w=-2.1094
This all for this problem. sorry i'm running out of time got to go.

Answer 7

i got 24

Answer 8

i solved it twice already and got the same answer. Sorry i'm running out of time. Have a great evening. ask the question again some one else could help you.

Answer 9

w=-2.1093813649
w=2.1093813649

Answer 10

sorry good bye