if 1 and - 2are two zeros of the polynomial x cube minus 4 x square - 7x+10 find its third zero
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A cubic polynomial has 3 zeroes
alpha ,beta,gama
sum of Roots is given by -b/a
let alpha be 1 and beta be -2
then
alpha + beta+ gama=-b/a
1+(-2)+gama= -(-4)/1
-1+gama=4
gama=4+1
gama=5
alpha ,beta,gama
sum of Roots is given by -b/a
let alpha be 1 and beta be -2
then
alpha + beta+ gama=-b/a
1+(-2)+gama= -(-4)/1
-1+gama=4
gama=4+1
gama=5
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