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How do you factor this trinomial (a= 1)

How do you factor this trinomial (a= 1)-example-1

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You will get a= 10 and a= -9
User Rapheal
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3 votes
To factor, you would get (a-10)(a+9) because you want to multiply to get the last value (-90) and add up to get the middle value (-1).
User Gordon Henriksen
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