Determine a number that must be added to make each of the following a perfect square trinomial.explain how you arrived at your answer.
1.x²+2x+_____
2.p²-30p+______
3.w²+21w+_____
4.s²-2/3s+_______
5.h²-3/4h+_____
explain how you arrived at your answer in each number.
1.____________
2.____________
3._____________
4.____________
5._____________​