Question

6. If a and B are zeroes of x-5x+3, find the value of
1/a-1/b-2ab
​

Answer 1

Answer:

Given that,

a and b are zeros

x

2

−5x+4=0

then,

Sum of roots =a+b=−

coff of x

2

coff of x

a+b=−(

1

−5

)

a+b=5−−−(1)

product of zeros =a−b=

coff of x

2

constant term

=

1

4

a.b=4−−−(2)

a

1

−

b

1

=

ab

b−a

=

ab

(b−a)

2

=

ab

(a−b)

2

=

ab

(a+b)

2

−4ab

=

4

5

2

−4×4

=

4

25−16

=

4

9

a

1

−

b

1

=

4

3

Hence, this is the answer.

Step-by-step explanation:

I hopes it helps you