Question

Which shows the factored form of x2 – 12x – 45?

Answer 1

Answer:

(x – 3)(x + 15)

Step-by-step explanation:

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  -45 and whose sum is 12.

Write the factored form using these integers.

(x – 3)(x + 15)