Question

What is the value of C so that x ^ 2 + 15x + C is a perfect square trinomial

Answer 1

ok

`\text{ x}^2\text{ + 15x + C}`

1.- i'll divide 15 by 2

15/2

2.- Then, I square the result

(15/2)^2 = 225/4

3.- Trinomial

`\begin{gathered} \text{ x}^2\text{ + 15x + }(225)/(4) \\ or \\ x^2\text{ + 15x + (}(15)/(2))^2 \end{gathered}`

4.- Conclusion

C = 15/2 or C = 225/4