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Mathematics
Esther Walton
23 November, 10:00
R^2+6r-40 factor each expression
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Margaret Shields
23 November, 12:04
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(r + 10) (r - 4)
To double check:
r * r is r^2
10 * r = 10r; - 4 * r = - 4r
Combine to get 6r.
-4 * 10 = - 40
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