If using the method of completing the square to solve the quadratic equation X^2+4x + 3 = 0, which number would have to be added to "complete the square"?

Which expression is equivalent to 4 square root 6 divided by 3 root 2

Last year, a state university received 3,560 applications from boys. of those applications, 35 percent were from boys who lived in other states. part a)how many applications did the university receive from boys who lived in other states? part b)applications to the university from boys represented 40percent of all applications. how many applications did the university receive in all? i don't how to do part b so me and plz tell how you got your answer

Ageologist had two rocks on a scale that weighed 4.6 kilograms together.rock a was 0.5 of the total weight.how much did rock a weigh?