Question

If $f=\left\{\right(4,5),(5,6),(6,-4\left)\right\}$ and $g=\left\{\right(4,-4),(6,5),(8,5\left)\right\}$.Then $2f+g=?$

Answer 1

Given that:

$f=(4,5),(5,6),(6,-4),g=(4,-4),(6,5),(8,5)$

$2f+g=(8+4,10-4),(10+6,12+5),(12+8,-8+5)$

$2f+g=(12,6),(16,17),(20,-3).$

Hence, this is the answer.