Question

минус корень из 81 равен 9?

Answer 1

нет... не равен . минус корень из 81 , РАВЕН -9, а отсюда 9 не равно -9

Answer 2

Solving the equation

The question is: "Is the solution to -√81 equal to 9?" Let's solve this step-by-step: 1) √81 = 9 (the square root of 81 is 9) This is a well-known fact. 2) -√81 = -9 (the negative of a square root is the square root of the negative number)

So the solution to -√81 is equal to -9, not 9.

Summary

In summary, while √81 = 9, applying the negative sign changes the solution. The correct answer is that -√81 is equal to -9, not 9.