Draw a model to represent the polynomial x^2 + 2x + 4.

a. 1 hundreds block, 1 tens block and 4 ones block
b. 1 hundreds block, 2 tens block and 4 ones block
c. 2 hundreds block and 4 ones block
d. none of theese

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