Which best proves why the expressions 4(x+3)+2x and 6(x+2) must be equivalent expressions?
When x = 3, both expressions have a value of 30.
When X= 5, both expressions have a value of 42.
When X= 1, both expressions have a value of 18, and when X= 8, both expressions have a value of 60.
When x=2, both expressions have a value of 15, and when X=6, both expressions have a value of 39.

answer:     true

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

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