Question

x^2+15x+k what makes this a perfect square ?

Answer 1

means?u wanna find the value of k?

Answer 2

- Yes .

Answer 3

think of making a perfect square out of what they give you:

\begin{array}c
x^2&--(15/2)x--\\
| \\
|&\text{how do we calcuate}\\
(15/2)x\\
|&\text{the area to be filled?}\\
|\\
\end{array}

Answer 4

take half of the xs you are given and construct them to make the frame for a "perfect square"; then the number needed is the area that has to be filled in

Answer 5

.... that makes better sense in me head lol

Answer 6

- Not in mine . :/