Question 107517This question is from textbook Intermediate Algebra
: Please help me find all numbers for which the rational expression is not defined. x^2-3x-4 over x^2-18x+77. Thank you This question is from textbook Intermediate Algebra
You can put this solution on YOUR website! Please help me find all numbers for which the rational expression is not defined. x^2-3x-4 over x^2-18x+77.
:
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The expression is undefined when the denominator = 0
Find the values of x which make the expression = 0
: = 0
Factors to
(x - 11)(x - 7) = 0
x = +11
and
x = +7
:
Substituting these two values for x; makes the denominator = 0; hence undefined
