Question

If alpha and β are the zeroes of the quadratic polynomial f(x)=x square—5x+4 find the value of 1/alpha+1/β—2alpha*β.

Answer 1

Hey mate here's your answer.
Hope it helps you

Answer 2

x²-5x+4 =x²-4x-x+4=x(x-4)-1(x-4)=(x-4)(x-1)so alpha is 4 and beta is 1