How do you use PEMDAS to simplify #(7+2)^2#?

2 Answers
Jan 17, 2016

Answer:

81

Explanation:

The order of operations is given by BIDMAS which stands for:
Brackets
Indices
Division
Multiplication
Addition
Subtraction

Deal with the brackets first:
#(7+2)^2=9^2#

Then the index:
#9^2=81#

Jan 17, 2016

Answer:

#(7+2)^2=81#

Explanation:

PEMDAS helps us to remember the order of operations when performing multiple operations in the same problem.

http://www.math-only-math.com/simplification-in-decimals.html

#(7+2)^2#

According to PEMDAS, we need to first carry out the operation inside the parentheses, which is the addition of #7# and #2#.

#(7+2)^2=(9)^2#

Next we apply the exponent #2# and square the #9#.

#9^2=81#