The answer is the first one! :)
Answer:
a x (a2-2)
Step-by-step explanation:
the 2 is supposed to be above the a I don't know how to that while typing.
Answer:
Therefore
and 
Step-by-step explanation:
Remember that if
= Identity Matrix
then
.
Also remember that for any invertible matrix
Identity Matrix.
Therefore

Therefore
and 
I believe the answer to your question is 23
Answer:
$67,580.73
Step-by-step explanation:
$49,329÷100=$493.29 (1%)
$493.29×37=$18,251.73 (37%)
$49,329+$18,251.73=$67,580.73