if A = -1/5. 4/-3 and B= 3/-10 -8/7 then show that 2A + B = I where I is an identity matrix of order 2×2

where is the image?

step-by-step explanation:

answer: 20

step-by-step explanation:

c

step-by-step explanation:

solution:

→c= a b , that is product of a and b is possible only when when a is m × n matrix and b is n × p matrix.

that is, number of columns of a= number of rows of b.

so, size of matrix , c= a b is , if a = (m × n)matrix

b= (n × p)matrix

then a b = [ (m × n)matrix] ×[   (n × p)matrix ]

→→c= a b= [m × p ] matrix

→→size of product a b will be equal to = number of rows of a × number of columns of b