how would i use the quadratic equation for x^3+17x^2+72x-90 to find the other two zeros after i have already found one

Question

anonymous · Answer

factor it

anonymous · Answer

the question isnt asking me to factor

anonymous · Answer

divide this equation by (x-1)
you will get x^2+18x+90
then factorise it you will get remaining 2 factors

anonymous · Answer

the first zero i got was 1. so  i would use -1 right?

anonymous · Answer

no divide your equation by (x-1)
because first zero you got at x=1 so (x-1)=0
after dividing you will get second order eqution solve it you will get the required solution

anonymous · Answer

|dw:1331140292567:dw| is that how i would set it up?