Question: How can you test two expressions to make sure they're equivalent? Answer A: Substitute several different values for the variables to see if each set gives identical answers for both expressions. Answer B: Switch the variables to different variables. Answer C: Substitute 0 for all variables. Answer D: Substitute a value for the variables to see if both expressions give the same answer.

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step-by-step explanation:

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step-by-step explanation:

answer:

it is general formula that is used to write value to its excet position

a11 a12 a13

a21 a22 a23

it is the example of order 2 by 3 matrix in this

a11 means value occur in 1 st row 1st column

a12 means value occurs in 1st row 2nd column

a13 means value occur in 1st row and 3rd column

a21 means value occurs in 2nd row and 1st column

a22 means value occurs in 2nd row and in 2nd column

a23 means value occurs in 2nd row and in 3rd column