timetravel23 timetravel23

21-06-2017
Mathematics

contestada

Factor completely and then place the factors in the proper location.
a 2 - a - 20?

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Аноним Аноним

21-06-2017

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)

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yamadoo74 yamadoo74

05-03-2020

Answer: (a-5)(a+4)

Step-by-step explanation:

Answer Link

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