Question

try 1: rewrite $y = x^2 + 8x + 15$ in factored form.

Explanation:

Step1: Find factors of 15

We need two numbers that multiply to 15 and add to 8: 3 and 5.

Step2: Rewrite in factored form

Use the two numbers to split the quadratic.
$y=(x+3)(x+5)$

Answer:

$y=(x+3)(x+5)$