Objective standard involved
Chat with our AI personalities
Objective standard involved
The evaluate a algebraic math expression you first must substitute a number for each variable. Then you must perform the operation in the correct order.
First evaluate all powers. Then evaluate multiplications and divisions, from left to right. Then evaluate additions and subtractions, also from left to right.Parentheses change the order of operations: you must evaluate anything in parentheses first, before combining it with anything outside the parentheses. Within the parentheses, the first rule also applies (first evaluate powers... etc.).Parentheses can be implied in some cases. For example, in fractions, you have to evaluate the numerator and the denominator separately, before carrying out the division of numerator / denominator. Also, in the case of powers, e.g. 25+3, the exponent has to be evaluated before the power. In the example, you add 5+3 before calculating the power.
This is how I learned my order of operations:Please Excuse My Dear Aunt Sallywhich means that you must solve equations in this order:First, you solve everything that is in a parenthesis. (the please)Then, you evaluate an exponents. (excuse)The order doesn't matter, just go from left to right and solve all that is multiplying and diving. (my dear)And finally add and subtract from the left to the right.
a programmer must be resourceful and must have critical thinking