Question

if a and b are zeros of the polynomial p(n) n²-5n+6 find the value of a+b-ab​

Answer 1

Answer:

-1

Step-by-step explanation:

Given a quadratic polynomial of form : xn² + yn + z,  

Sum of zeroes of a quadratic equation (a+b): $\frac{-y}{x}$ = $-\frac{-5}{1}$ = $5.$

Product of zeroes of a quadratic equation (ab): $\frac{z}{x} = \frac{6}{1} = 6.$

∴ a + b - ab = (a+b) - ab = 5 - 6 = -1. (Ans.)