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alexdok [17]
3 years ago
10

A certain number added to its square is 30. Find the number

Mathematics
1 answer:
Alex Ar [27]3 years ago
5 0
X+x²=30
x²+x-30=0
(x+6)(x-5)=0
x=-6 or x=5
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see the attached figure to better understand the problem

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