What should be done to x² + 15x in order to create a perfect square? O add 7.5
O subtract 56.25
subtract 7.5
O add 56.25

subtract 7.5

add 56.25

Step-by-step explanation:

To create a perfect square

add ( half the coefficient of the x- term )²

x² + 2(7.5)x + 7.5²

= x² + 15x + 56.25

= (x + 7.5)² ← a perfect square

chad should not have included the values (1, 2) and (3, 6) because that would mean he only had half a healing card.

hello, there is a new name in town and that's the human spider!

answer: d.) the total number of protons and neutrons is 15

merry christmas!

~

your friendly neighborhood human spider! .