y^2 + 6y + How do i make it a perfect square

y^2 + 6y + How do i make it a perfect square

x^211x+ x^2 -15x+ s^2- 2/3s + h^2-3/4h+

Find the constant term that should be added to the expression to form a perfect square trinomial. Write the resulting perfect square trinomial in factored form

try to solve but failed..

pls help find the perfect square, not sure if i understand it

what would the first 10 perfect square numbers?