Question

If a, b are the roots of the quadratic
equation x2 – X – 4 = 0, then the value of
1/a + 1/b -ab is?​

Answer 1

Answer:

15/4

Step-by-step explanation:

sum of roots=a+b=1

product of roots= -4

now simplify question we get

a+b/ab -ab=(-1/4)+4=15/4

Answer 2

Answer:

sum of roots=a+b=1

product of roots=-4

a+b/ab-ab=(-1/4)+4=15/4