The square of a number exceeds the number by 72 . Find the number
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Answer:9 or -8
Step-by-step explanation:2 = x + 72
x^2 - (x+72) = 0
x^2 -x -72 = 0
x^2 - 9x + 8x -72 = 0
x(x-9)+8(x-9)=0
(x+8)(x-9)=0
x=9,x=-8
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