Question

if alpha and beta are the zeros of the polynomial x square - 5 x + 6 then find the value of alpha + beta minus 3 alpha beta

Answer 1

Hey dear here is your answer......

x^2-5x+6
x^2-2x-3x+6
x(x-2)-3(x-2
(x-2)(x-3)
alpha =2 , beta =3

alpha + beta =5/1
alpha.beta =6

alpha + beta - 3 alpha.beta
5-3*6
5-18
-13

hope it may help u !!!!