Question

solve 0=x3-x2-20x-154.

Answer 1

factor (x-7)(x^2+6x+22) and solve it to get 1 real root and 2 complex ones

Answer 2

so is the real root 7 then use quadratic to get the other 2

Answer 3

yup

Answer 4

what did you get when you used quadratic

Answer 5

I don't know, you solve and get it, I can check. It's your stuff, not mine, right? I guide you only. I don't solve it for you

Answer 6

i know i got (-6+/-√-52)/2

Answer 7

oh wait it would turn into (-3+/-i√52)/2

Answer 8

yup, simplify them, please . the first one is right, the second one is not

Answer 9

what do you mean

Answer 10

\[x = \frac {-6\pm\sqrt{-52}}{2}\] is the right answer, but should be simplify and use complex symbol "i" there

Answer 11

\[x=-3\pm2i \sqrt{13}\]

Answer 12

yup

Answer 13

thank you so much

Answer 14

nope, sorry, don't have 2 before the sqrt

Answer 15

just \[-3\pm i\sqrt{13}\]

Answer 16

oh okay