Answer:
Yes
Step-by-step explanation:
Since we are adding two polynomials
The sum will also be polynomial
Answer with Step-by-step explanation:
We are given that
A and B are matrix.
A.We know that for two square matrix A and B
Then, 
Therefore, it is true.
B. det A is the product of diagonal entries in A.
It is not true for all matrix.It is true for upper triangular matrix.
Hence, it is false.
C.

When is a factor of the characteristics polynomial of A then -5 is an eigenvalue of A not 5.
Hence, it is false.
D.An elementary row operation on A does not change the determinant.
It is true because when an elementary operation applied then the value of matrix A does not change.
I believe the answer is D. 1.121, 1.21, 1.432, 1.53
Dividing by 100 shifts each digits two paces because 100 has two zeros.
Each 0= a digit shifts to the right
hope this helps c:
The baby blue whale weighs 30 pounds, since 120 divided by 40 is 30.