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kumpel [21]
4 years ago
6

Find two consecutive numbers whose square differ by 31

Mathematics
1 answer:
Svetradugi [14.3K]4 years ago
6 0
First number = x
Consecutive number = x+1
"squares differ by 31" means to square both numbers and subtract them:
(x+1)^2 - (x)^2 = 31
x^2+2x+1 - x^2 = 31
2x+1 = 31
2x = 30
x = 15 (first number)
x+1 = 15+1 = 16 (consecutive number)
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