Question

if alpha and beta are zeros of quadratic polynomial x square - 6 X + 8 find the value of a if 3 alpha + 2 Beta is equal to 20​

Answer 1

Step-by-step explanation:

x²- 6x+8 =0

x²- 4x - 2x + 8 =0

x(x - 4) -2(x - 4) =0

(x-4) (x -2) =0

x = 4. and. x = 2

3x+ 2x =20

3(4)+2(4)= 20

12+ 8 = 20