Answer: +9, -9
Step-by-step explanation: The rational expression in this case is undefined if the the denominator is equal to zero, which means that the x cannot be whatever makes the denominator zero, so:
x² - 81 = 0 ⇒ x² = 81 ⇒ x = +/- √81 ⇒ x = +/- 9
Note that we are using the equal sign just because this particular problem askes for a solutions that is undefined.
since 8/8 is equivalent to 1, the equation can be reduced to 6/7 because multiplying 6/7 by 1 won't change the value of the number.
Answer:
—1=<x<-3
Since
X<-3
X>=-1
Not shaded means including.
Answer:
B
Step-by-step explanation:
