The sum of a number and it square is 35/4.find the number
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Answered by
0
2.5 is the answer
2.5+6.25=8.75
VedanshSomani:
-3.75 can also be the answer
Answered by
5
x + x^2 = 35/4
4x + 4x^2 = 35
4x^2 + 4x - 35 = 0
4x^2 + 14x - 10x - 35 = 0
2x( 2x + 7 ) - 5( 2x + 7 ) = 0
(2x - 5)(2x + 7) = 0
x = 5/2
Or
x = -7/2
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