Answer:
(x - 8) (x - 7)
Explanation:
x² - 15x + 56
Consider the form x² + bx + c. Find a pair of integers whose product is c and whose sum is b. In this case, whose product is 56 and whose sum is −15.
-8, -7
Write the factored form using these integers.
(x - 8) (x - 7)