How do you factor the trinomial $x ^2 - 13x +42$ ?

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Answer 1 · 2015-12-02T04:17:33

Factor x^2 - 13x + 42

Ans: (x - 6)(x - 7)

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)

How do you factor the trinomial x ^2 - 13x +42x ^2 - 13x +42?