How do you factor the trinomial #a^2 - a - 20#?
1 Answer
Dec 1, 2015
Factor y = a^2 - a - 20.
Ans: (a + 4)(a - 5)
Explanation:
Factor:
Fin 2 numbers knowing sum (-1) and product (-20). They are (4) and (-5).
y = (a + 4)(a - 5).
