Question

For what the value of x,10 by x-5 became undefined? ​

Answer 1

When x = 5

10/(x - 5) will become undefined when the denominator equals 0.

So we need to find the value of x for which the expression is undefined (what values of x makes the denominator equal to 0).

To do that, set (x - 5) equal to zero and solve for x:

x - 5 = 0

x - 5 + 5 = 0 + 5

x = 5

So the equation is undefined when x = 5