Question

37.If A = {x: x = 2n and n < 6, n is a natural number}, B = {y: y = 3n and n < 4, n is a natural number}, find A U B.​

Answer 1

Answer:

x

2

+4x+1=0

α+β=−4

αβ=1

→

α

2

1

+

β

2

1

=(

α

1

+

β

1

)

2

−

αβ

2

=(

αβ

α+β

)

2

−

αβ

2

=(

1

−4

)

2

−

1

2

=16−2

=14