Question

if a and b are root of the equation 5x²-7x +1 = 0 then the value of 1/a + 1/b. (a) 7 (b) 9 (c) 6 (d) 8​

Answer 1

Step-by-step explanation:

sum of roots =a+b= -b/a=7/5

products of roots =ab= c/a=1/5

1/a +1/b=b+a/ab=7

Answer 2

Answer:

a)

Step-by-step explanation:

A and b are the roots of equation.

a+b= -b/a = -(-7)/5 =7/5 this is sum of the root . Now, product of the root i.e. a×b= c/a = 1/5. 1/a + 1/b = 7/5 × 1/5 = 7