Question

help algebra

Answer 1

@agent0smith

Answer 2

Looks factorable.

If you can factor x^2 + 2x + 1, then you can factor this.

Answer 3

(x+x)+2x+1

Answer 4

x^2 = x*x
not x+x you silly billy :O

Answer 5

If you can't factor x^2 + 2x + 1, then well, you might be in the wrong class...

Answer 6

i can!

Answer 7

Are you understanding this problem?\[\large\rm (\color{orangered}{\cos x})^2+2\color{orangered}{\cos x}+1=0\]\[\large\rm (\color{orangered}{u})^2+2\color{orangered}{u}+1=0\]Factors, ya?\[\large\rm (\color{orangered}{u}+1)^2=0\]\[\large\rm (\color{orangered}{\cos x}+1)^2=0\]Which leads to,\[\large\rm \cos x=-1\]Just a few Algebra steps that get you to this point.
I don't mean to spoil all the fun for you,
you just looked a little stumped :d

Answer 8

Its ok @iwanttogotostanford, Im in calc II and still have trouble with basic algebra sometimes, as @agent0smith can tell you

Answer 9

yeah i do too:-( I always manage to get A's but i often forget afterwards...

Answer 10

\[\text{If you are done with the question, please close it.}\]If you still need help, go ahead and ask ☺

Answer 11

i still need help:0

Answer 12

did @zepdrix explain it all?

Answer 13

@agent0smith

Answer 14

Where is cosx equal to -1? Use a unit circle.

Answer 15

I'm just asking first did zepdrix explain it all basically?

Answer 16

just so i don't get confused... ^

Answer 17

Yes