Question

9]
If a and B are the roots of the equation 2x (2x + 1) = 1, then B is equal to
1) 2a(a + 1)
2) -2a(a + 1)
3) 2a(a - 1)
4) 2a^2
​

Answer 1

Step-by-step explanation:

2x(2x+1)=1

4x²+2x=1

T

(

2

r

)

=

ρ

g

h

2

(

2

r

)

h

Answer 2

α and β are the roots of the equation 4x2 + 2x - 1= 0

2) -2a(a + 1) is the correct ans