Question

how to determine a number that must be added to make a perfect square trinomial
1. x2 + 2x +
2. t2 + 20t +
3. x2 30x +
4. w+ 21x +
5. s22/3s +​

Answer 1

Answer:

1. 1
2. 12
3. 43
4. 13
5. ..................