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Mathematics
Schaefer
31 May, 23:10
Which polynomial identity will prove 49-5=45
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Leo Davis
1 June, 00:30
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49 - 4 = 45
7² - 2² = 45
a² - b² = (a + b) (a - b) - difference of squares
(7 - 2) · (7 + 2) = 45
5 · 9 = 45
45 = 45
Answer: A) Difference of Squares
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