the sum of natural noumber is 156.find the number
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The sum of a natural number and its square is 156. Find the number.
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ANSWER
Suppose the natural number =x
its square x2
x+x2=156x2+x−156=0x2+13x−12x−156=0x(x+13)−12(x+13)=0(x+13)(x−12)x=12x=−13
or
x=12
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