Question about Computers & Internet
Such as the sum of their square is 800
Let nos be x-d, x, x+d
=> 3x+d -d =48
(x-d)^2 + x^2 + (x+d)^2 = 800
x^2 + d^2 -2xd + x^2 +x^2 + d^2 + 2xd=800
3x^2 + 2d^2 =800
3*(16)^2 + 2d^2 =800
3*256 + 2d^2 =800
768 + 2d^2=800
d^2 = 32/2= 16
so numbers are x-d=16-4=12
Posted on Jan 27, 2009
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Posted on Jan 02, 2017
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