# If alpha and beta be 2 zeros of the quadratic polynomial f(x)=2x square -3x +7 then evaluate 1upon alpha +1 upon beta .please answer me fast.....

2
by yammna

2015-04-26T01:54:09+05:30

### This Is a Certified Answer

Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
α  and β  are    zeros / roots of   2 x² - 3 x + 7

So  the sum of the roots = α + β =  - (-3/2) = 1.5 and
the product of the roots = α β =  7 / 2  = 3.5

2015-04-26T10:17:08+05:30
Given
f(x)=2x²-3x+7 ,α andβ are zeros of the equation
find
1/α+1/β=β+α  = sum of roots/product of roots        point as 1st
αβ
on comparing given equation with
ax²+bx+c=0  ,a=2 ,b=-3 and c=7
(α+β) sum of roots=-b/a= -(-3/2)⇒3/2
(αβ) product of roots=c/a=7/2
put the value in 1st
1/α+1/β= 3/2    ⇒3/7⇒0.42
7/2

Thanks a lot for choosing braimliest answer