Question

if alpha and beta are zeroes of polynomial f(x)=4x^2+3x+7,then 1/alpha+1/beta is a)7/3 b)-7/3 c)3/7 d)-3/7

Answer 1

here is your answer by Sujeet ,
-_-----_-------_--------_----------------_-----

given that quardratic polynomial,
4x²+3x+7

then,

sum of zeroes=-b/a=-3/4
product of zeroes=c/a=7/4

then,
According to the question,

1/a+1/b
Now putting the value,
a+b/ab
-3/4 / 7/4
-3/4*4/7
-3/7


Answer -3/7


that's all














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