factorise x cube + 2 X square + 5 x + 10
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Answered by
8
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
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
rddkke:
i want factorizarion
Answered by
15
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