Question

7 is subtracted from the half of the square of a natural number the result is 25 find the numbers

Answer 1

Step-by-step explanation:

let the number be x

it is a natural number .i.e. 0 < x

(x . x) -7 = 25

1/2x sq. = 25 + 7

x sq. = 32 × 2

x sq. = 64

x =√64

x = 8

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Answer 2

Let the natural number be, x

$\frac{1}{2} x^{2} -7 = 25$

$\frac{1}{2} x^{2} = 25+7$

$\frac{1}{2} x^{2} = 32$

$x^{2} = 32/ \frac{1}{2}$

$x^{2}= 32* \frac{2}{1}$

$x^{2} = 64$

$x= \sqrt{64}$

$x= 8$

The natural number is 8.