Question

Solve algebraically for all values of x:
x^4+4x^3+4x^2=-16x

Answer 1

add 16x to the other side, then solve by setting it equal to 0

Answer 2

i did that and i kept going but i got confuse ):

Answer 3

confused

Answer 4

did you factor out the x?

Answer 5

i factored by grouping

Answer 6

then you should know one answer is 0

Answer 7

and i got (x^3+4)(

Answer 8

one answer is x=0

Answer 9

*(xplus4)

Answer 10

yea i know that and i got -4

Answer 11

thats it! good job!

Answer 12

but idk how to get the third solution

Answer 13

x=0, and -4

Answer 14

lol xD but the answer key also has...

Answer 15

+- 2i,

Answer 16

oh. well do you know the quadrilateral formula?

Answer 17

yes! but idk where i use it ! my work may be wrong i'm afraid l:

Answer 18

i don't have a trinomial

Answer 19

oh