Question

How do you factor the trinomial `x^2-2x-35`?

Answer 1

y = (x - 5)(x + 7)

Explanation:

Find 2 numbers, knowing sum (-2) and product (-35).
Compose factor pairs of (-35) --> (5, -7). This sum is -2 = b. Therefor,
the 2 numbers are 5 and -7
y = (x + 5)(x - 7)