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When isaac opens a book, the product of the page nuumbers on the open pages is 420?
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Dec 14, 2018
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When isaac opens a book, the product of the page nuumbers on the open pages is 420?
Mathematics
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Sam Harwell
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x(x+1)=420
x²+x-420=0
(x+21)(x-20 )=420
x = -21 or +20. since we don't use negative page numbers discard -21 and let x be 20. the 2 pages are thus 20 and 21
Bondt
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Dec 20, 2018
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Bondt
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