Question

can you show me the steps to this difficult factorising question

Answer 1

I need to find the possible answers of n
720 = n3 + 3 n2 + 2 n

Answer 2

*720 = n^3 + 3 n^2 + 2 n

Answer 3

take the n out and factor

Answer 4

if we hv yo find solution we start from 1 and move towards all the factors of 720 gradually putting those values in place of n
if n = 8 then we have 720 = 720
hence n = 8 is a solution
(n-8)(n^2+11n+90)
rest solve n2 + 11n +90 using quadratic formula
and find the zeroes

Answer 5

how do we know about 11

Answer 6

i am confused

Answer 7

use the quadratic formula
find discriminant
have u heard of that formula ??

Answer 8

no :(