baraanakash2p09r1f baraanakash2p09r1f

01-12-2017
Mathematics

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

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tynollette tynollette

01-12-2017

x+x²=30
x²+x-30=0
(x+6)(x-5)=0
x=-6 or x=5

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