Question

If alpha and beta are the zeroes of x^2-x-4 , then evaluate 1/alpha + 1/beta - alpha×beta.

Answer 1

let zeros are a, b
a+b =1
a*b = -4
accodng to ques
1/a +1/b - a*b
1/1 -1/4 -1*(-4)
3/4+4
19/4...

Answer 2

Hey

Here is your answer,

In attachment

Hope it helps you!