The product of two consecutive odd integers is 143. find all such pairs of integers.

Question

11-10-2017
Mathematics

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The product of two consecutive odd integers is 143. find all such pairs of integers.

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Chriss2001 Chriss2001 · Answer 1 · 2017-10-11T16:16:31+02:00

Chriss2001 Chriss2001

11-10-2017

x(x+2)=143
x^2+2x-143=0
(x+13)(x-11)=0
x=-13
x=11 solution
x+2=13 solution
proof
11*13=143
143=143

l=w+4
thus (w+4)w=117
w^2+4w-117=0
(w+13)(w-9)=0
w-9=0
w=8 for the width
l=9+4=13 for the length.
proof
9*13=117
117=117

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