# How do you find all the values that make the expression undefined: #(5x - 25)/(x^2 - 25)#?

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To find the values that make the expression undefined, we need to identify the values of x that would result in a denominator of zero. In this case, the expression will be undefined when the denominator, x^2 - 25, equals zero.

To solve x^2 - 25 = 0, we can factor the equation as (x - 5)(x + 5) = 0.

Setting each factor equal to zero, we have x - 5 = 0 and x + 5 = 0.

Solving these equations, we find x = 5 and x = -5.

Therefore, the values that make the expression undefined are x = 5 and x = -5.

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