Ask
your own question, for FREE!
Mathematics
19 Online
find the real or imaginary solutions of each equation by factoring x^4-8x^2=-16
Still Need Help?
Join the QuestionCove community and study together with friends!
write the expression as \[x^4 -8x^2 +16 =0\] Recognize in it the square of \[(x^2 -4)\] Your equation becomes \[[(x+2)(x-2)]^2 = 0 \], whoose soultions should be evident.
is the solutions (2i,2i,-2i,-2i)
is that right
\[(2i)^4 -8 (2i)^2 = -16 \rightarrow 16*1 - 8 * 4 *(-1) = -16 \rightarrow 16 + 32 = -16 \rightarrow 48 = -16\] which is evidently false. Same goes for -2i
so wats the answer im completely confused
Still Need Help?
Join the QuestionCove community and study together with friends!
From my first post, remembering that \[(a*b)^2 = a*b*a*b\]\[(x+2)(x-2)(x+2)(x-2)=0\] so you get that \[x=-2, x=2, x=-2, x=2\]
i figured it our actually before u wrote back but thank u
Can't find your answer?
Make a FREE account and ask your own questions, OR help others and earn volunteer hours!
Join our real-time social learning platform and learn together with your friends!
Join our real-time social learning platform and learn together with your friends!
Latest Questions
laylasnii13:
I need a name for it The weight is heavy, I can't hold. The sun is gone, it's always cold.
minustempo:
When do you go to bed, when do you wake up, and do you feel you get enough sleep?
Tryce:
I just came back after like a month and a half and going back to school in a few
Tryce:
just came back after like a mouth and a half and going back to school in a few da
SummertimeSadness:
Funeral Lace How can I prove the depth of my love for you, When words fall silent in its worth? Instead, I trace this blade's cold steel Across my vulnerabl
Sarahwells:
The undigested food material from the small intestine is received by the? idk the
Subshilava:
Is the NSHSS society worth it because itu2019s coming up to my due date to join o
Subshilava:
Does anyone have recommendations for writing ur college essay I cannot think of a
17 minutes ago
2 Replies
0 Medals
2 hours ago
0 Replies
0 Medals
3 hours ago
6 Replies
0 Medals
17 hours ago
0 Replies
0 Medals
1 hour ago
4 Replies
2 Medals
5 hours ago
4 Replies
0 Medals
5 hours ago
2 Replies
1 Medal
1 day ago
3 Replies
1 Medal