Please help. Explain why it is correct. I will give brainliest

Hey

B an encyclopedia entry about an experiment

A primary resource is information that was documented during an event that was written about.

Please wait tell you get another answer because im not sure about this

step-by-step explanation:

we are given

we have to simplify it

firstly, we will factor it

now, we can cancel like terms

now, we can combine it

so, we get

close lines strong magnet less close weaker