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Mathematics
29 August, 09:07
Some one factor x^2-x-72
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Lailah George
29 August, 09:26
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Think of products that equal to 72
When you find those numbers add or subtract those numbers to see if you get the value in the center
9*8=72
Make 9 a negative (-9) and 8 a negative 9 in the first parenthesis and positive 8 in the second you will get
-8x+9x=-x
(x-9) (x+8)
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