What is the value of c so that x² + 15x + c is a perfect square trinomial?
30
fifteen over two
15 over 4
225 over 4
To determine the value of c so that x² + 15x + c is a perfect square trinomial, we need to follow these steps:
1. Take half of the coefficient of x, which is 15, and square it.
(15/2)² = 225/4
Therefore, the value of c so that x² + 15x + c is a perfect square trinomial is 225/4.