For what value of x is the expression $\frac{2x^3+3}{x^2-20x+100}$ not defined?
+128474 The numerator is defined for all x
The x values that make the denominator = 0 will not be defined
x^2 -20x + 100 = 0 factor
(x - 10) ( x - 10) = 0
Setting either factor to 0 and solving for x
x - 10 = 0
x = 10 = the value of x that makes the rational function undefined
