Answer:
Order of operations
Step-by-step explanation:
4 must be squared before multiplying by 5 because of order of operations (PEMDAS). PEMDAS stands for parentheses, exponents, multiplication, division, addition, and subtraction. 4 squared is an example of an exponent and multiplying by 5 is an example of multiplication. Therefore 4 squared must come first.
When 4 is squared first, you will get an answer of 80.
When you multiply by 5 first, you will get an answer of 400.
