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.
The value of the digit nine in that number is ten, the nine os in the tens place
That would be choice 3
middle term = -3mn-8mn = -11mn and last term = + 2n^2
we know that
A <u>geometric sequence</u> is a sequence of numbers in which the ratio between consecutive terms is constant
so
Let
therefore
The common ratio is equal to 
<u>the answer is</u>
The common ratio is 1.02
