Alpha and beta are zeroes of polynomial x²-6x+ a. Find the value of a, if 3alpha +2beta = 20

Alpha and beta are zeroes of polynomial x²-6x+ a. Find the value of a

1.	Alpha and beta are zeroes of polynomial x²-6x+ a. Find the value of a, if 3alpha +2beta = 20
Answer» p(x)=x2-6x+aa=3alpha+2beta=20.....(1)from the quadratic expressionalpha+beta=6.....(2)and alpha×beta=a.....(3)multiply eq.. (2)by 2and subtract from(1)a=20-6×2a=20-12=8alphasubstitute this value in (2)beta=6-8=-2then( -2)is beta and( 8)is alpha then=alpha×beta =8×-2=-16 answer Find sum of zeroes alpha+beta=-b/a u will get a value then find the value of alp.and beta with the help of given information and then find product of zroz =c/a u will get the value of a How u solve this explain -16