4 times a number is 5 less than the square

of that number. Find the negative solution.

The negative solution is - 1

Explanation:

Let the number is x.

According to the question:

4 times of x will be 4x

5 less of the square of that number will be x² - 5

Therefore,

4x = x² - 5

Make this equation in the form of a quadratic equation

x² - 4x - 5 = 0

(x - 5) (x + 1) = 0,

The value of x = 5, and x = - 1

The negative value of x of two solutions is - 1.