Question

anyone answer it... fast

Answer 1

Answer:

multiply A times A this will leave you with

$\binom{2 \: \: \: - 2 }{ - 2 \: \: \: \: \: 2}$

now take 2 common

so u will get

$2 \binom{1 \: \: \: - 1}{ \ - 1 \: \: \: \: 1}$

since,

$a = \: \binom{1 \: \: \: - 1}{ \ - 1 \: \: \: \: 1}$

u will get 2A

so KA =2A

A will be cancelled out leaving

K=2

hope this helps :)