Two expressions are equivalent if they have the same value no matter what the value of the variables in them.
Now, Considering the expressions of 3^2+1 and 5×2. The values of Both equations are equal to 10. so they are called equivalent expressions.
If the terms in two expressions are the same or identical, then the two expressions are equal.
To expand an expression, we use the distributive property which is used to rewrite the product as a sum. The new expression is equal to the original expression.
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