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Mathematics
Heaven Bond
9 July, 10:56
Factor.
x^2-9x+20
Enter your answer in the box.
+1
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2
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Alvin Dunlap
9 July, 13:27
0
(x-5) (x-4)
Step-by-step explanation:
x^2-9x+20
Using AC method
4 * 5 = 20 and 4 + 5 = 9
= (x-5) (x-4)
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Lizeth Levy
9 July, 14:38
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First, you'd look at what can multiply together to make 20. You can multiply 10x2, 1x20, or 4x5 (or change them so each number is a negative) to make a positive 20. You then must look at which one of these can be added or subtracted together to create - 9. Negative 4 and 5 can be subtracted to make - 9, so you would factor them out, as well as the x^2, and get the answer (x-4) (x-5).
Answer: (x-4) (x-5)
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