Question

if alpha and beta are the zeroes of the polynomial 2x2-5x+7, find the value 1/alpha+1/beta
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Answer 1

Answer:

5/7

Step-by-step explanation:

hope if helps!.. .....

Answer 2

STEP-BY-STEP EXPLANATION

p(x)=2x^2-5x+7

let alpha =a and beta=b

a*b=-c/a

that is, -7/2

a+b= b/a

that is -5/2

A/Q, we have to find,

1/a+1/b

taking their LCM

a+b/ab

now putting their value

-5/2 / -7/2

5/7

THEREFORE,

1/ALPHA +1/BETA =5/7