Question

factorise x cube + 2 X square + 5 x + 10

Answer 1

this is a cubic eq so it only solve with the help of hit and trail method
let x = -2
on putting x = -2 in the equation

-8 + 8 -10 +10
so one root of the eq is -2
x = -2

x+2=0
then ,
divide

x^3 + 2x^2 + 5x +10 ÷ x + 2

on division you get. ;
x^2 + 5 =0
x^2 = -5

so ,the sure of any variable never be negative

so eq have only one root that is -2

Answer 2

Step-by-step explanation:

ok............ .....