Question

If 15 is added to square of a number it is 6 less than square of its successor the number is

Answer 1

Answer:

10

Step-by-step explanation:

Let the number is x

It's successor is x +1

$15 + {x}^{2} = (x + 1) {}^{2} - 6 \\ \\ 15 + {x}^{2} = {x}^{2} + 2 x + 1- 6 \\ \\ 2x - 5= 15 \\ \\ 2x = 15 + 5 \\ \\ x = \frac{20}{2} \\ \\ x = 10$

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