Factor completely and then place the factors in the proper location.
a 2 - a - 20?
2 answers:
This is a notable trinomial.
You have to find two numbers which summed give 1 and multiplied give 20.
In this case +4 and -5
-5+4 = -1(a)
-5*4 = -20
So (a+4)(a-5)
Answer: (a-5)(a+4)
Step-by-step explanation:
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