to the square of a natural number four times the next natural number is added and the result is 36.Find the number
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Step-by-step explanation:
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Step-by-step explanation:
Let the number be x.
Square of the number = x^2
4 times the next natural number = 4(x+1)
Therefore,
x^2 + 4(x+1) = 36 .. eq(i)
x^2 + 4x + 4 = 36
x^2 + 4x - 32 = 0
x^2 + 8x - 4x - 32 = 0
x(x + 8) - 4(x + 8) = 0
(x+8)=0 or (x-4)=0
x = -8 or x = 4
Therefore, the natural number can be 4 or -8.
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