Question

What is the sum of the roots of the polynomial shown below?
x^3-8x^2-23x+30

Answer 1

hi ,
u can factorize the expression first... and find the roots easily... Do u need help to factorize it ?

Answer 2

um i can try but please help me!! and tell me if i do it wrong

Answer 3

(x-1)(x^2-7x-30)
i think thats the first

Answer 4

am i correct?

Answer 5

yes... so far so good... go ahead!!!

Answer 6

u can factorize ( x^2 -7x -30) tooo!!

Answer 7

mkay
(x-1)(x^2)-7x-30)
(x-1)(x+3)(x-10)?
am i right?

Answer 8

so to find the sum of the root will i have to do this : 1-3+10=8 ?
would that be right?

Answer 9

yes ! you've got that right!!

Answer 10

yay!! so the sum of the roots is 8?

Answer 11

yep!!

Answer 12

omg thank you!! :D

Answer 13

u r welcome!!

Answer 14

yep!!