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How is the expression (x-6)/(x-4) undefined at both 4 and -4?
I even plugged it in my graphing calculator and is only says error at 4, but my worksheet indicates in all answers that x is undefined at 4 and -4, can somebody explain this to me?
2 Answers
- AnthonyLv 78 years agoFavorite Answer
The worksheet must be incorrect then, as (-4 - 6)/(-4 - 4) = -10/-8 = 5/4. The denominators have to be 0, and that is not the case. Good thinking for using your grapher, and you were correct.
- Anonymous4 years ago
that is lots greater convenient than you think of. If the denominator equals 0, the expression is undefined. In question a million, the denominator is 24m²n?. undergo in ideas that any extensive form instances 0 is 0. So, if 24m²n? = 0 then m=0 or n=0 or m=n=0. you ought to try this step until now decreasing the fraction to lowest words.
