Question

if A and B are the roots of 4x^2-5x+8=0 then AxB will be equal to?​

Answer 1

Answer:

A*B=(-b+√b²-4ac)(-b-√b²-4ac)/4a²

= b²-b²-4ac/4a²

=-c/a

here,a=4 and c =8

so,A*B=(-2)

pls mark brainliest