How do you factor the trinomial #x ^2 - 13x +42#?
1 Answer
Dec 2, 2015
Factor x^2 - 13x + 42
Ans: (x - 6)(x - 7)
Explanation:
Find 2 numbers knowing sum ( -13) and product (42).
Factor pairs of (42) --> (2, 21)(3, 8)(6, 7). This sum is 13. Then, the 2 numbers are -6 and -7.
y = (x - 6)(x - 7)
