Question

7 times a number is 8 less than the square of that number. Find the negative solution.

Answer 1

-1

Explanation:

The required relation is ...

7n = n^2 -8

0 = n^2 -7n -8 . . . . put in standard form

0 = (n -8)(n +1) . . . . factor

Solutions are n=8 and n=-1.

The negative solution is -1.