posted by Nicole .
Could you please help me factor the trinomial.
Since the coefficient of s^2 is 1, the factors are of the form (s+/-?)(s+/-?)
What two numbers have a sum of 7 and a product of 12?
Clearly, 3 and 4.
SInce the sum is -7 and the product is +12, the only possibility is (s - 3)(s - 4)