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

Question

1771 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2016-01-17T12:16:05

81

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#

Answer 2 · 2016-01-17T12:38:09

#(7+2)^2=81#

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

#(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#