Question

Find a positive number whose square is 3 more than itself

Answer 1

The positive number whose square is more then 3 will be x=2.3

What is positive number?

Positive number is defined as the number which falls in a positive quadrant.To find out the number we will form a equation according to the question.

It is given in the question that a positive number whose square is 3 more then itself.

Suppose the number is x so according to question.

$x^2=x+3$

$x^2-x-3=0$

Now by solving the quadratic equation from the formula.

$x=\dfrac{-b\pm\sqrt{b^2-4ac}}{2a}$

$x=\dfrac{-(-1)\pm\sqrt{(-1^2)-4\times 1\times-3)}}{2}$

x=2.3 and  x=-1.6

Here the positive number whose square is more then 3 will be x=2.3

To know more about positive number follow

brainly.com/question/6108697

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