Question

i want the answer please help me​

Answer 1

Answer:

C

Step-by-step explanation:

mark me as brainliest

if I am correct

Answer 2

Answer:

D.

Step-by-step explanation:

For option D:

A=3×3

then A²=A*A=3×3 in dimension.

B =3×2

2B= 3×2 in dimension.

2A=3×3 in dimension.

addition or subtraction of A² and 2A is defined as they are in same dimension.

But addition or subtraction of (A²-2A) and 2B is undefined as they are not in same dimension.

So, option D(A²+2B-2A) is undefined.

For more

Dimension of a matrix

is expressed as m×n

where m(1st one) is the number of rows and the n(2nd one) is the number of columns.

For example,

the dimensions of the matrix given in the question are A=3×3

B=3×2

C=3×1

To multiply two matrix

it is must:

1st matrix's dimension =m×n

2nd matrix's dimension =p×q (here p is the number of rows and the q is the number of columns of 2nd matrix)

and n=p is must for multiplying two matrix. m and q may differ from each other.

thats mean

the number of columns of 1st marix will be equal to the number of rows of the second matrix.

and the dimension of resultant matrix will be m×q.

for calculating AB:

A=m×n=3×3

B=p×q=3×2.

For Adding matrix :

All the matrix must be in same dimension.

Sum of a (3×3) matrix and a (2×3) matrix is undefined.

But sum of a matrix of 2×3 dimension and a matrix of 2×3 dimension will be defined.