X^2+4x+3 or (x+1)(x+3) it depends what the question is asking you to do
Answer:
ooh sorry bro but i can't understand. pls.. write it in english.. what subject is this???
Answer:

Step-by-step explanation:
Answer:
about 7g/cm^3
Step-by-step explanation:

where p is density is equal to mass (5g) divided by volume (.689cm^3).
or

= 7.25 or approximately 7g/cm^3
or approximately .007kg/cm^3 dependent on what metric they want their answer in.