Answer:
x=4
Step-by-step explanation:
subtract 8 from both sides
then you get 2x=8
then divide by 2
then you get x=4
Answer:
why so many periods/dots whatever you wanna call them???
Step-by-step explanation:
Hope you have an amazing rest of your day/week!!!
No,

is not a subspace of

. A simple counter-example to the contrary: let

with

. However, scaling by -1 gives the vector

and

.