How do you simplify 33 – 3[20 – (3 + 1)^2] using order of operations?

2 Answers
Apr 16, 2018

21

Explanation:

33-3[20-(3+1)^2]

The order of operations is shown here, PEMAS:

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As you can see, parenthesis is the first thing we need to do, so let's simplify the quantity in the parenthesis:
33-3[20-(4)^2]

The next is exponents:
33-3[20-16]

Brackets, or [] are the same as parentheses () in this case.

So now we solve for the quantity inside the bracket:
33-3[4]

The next thing to do is multiplication:
33-12

And finally subtraction:
21

Hope this helps!

=21

Explanation:

PEMDAS
Perentheses, exponents, multiplication, division, addition, subtraction

Step 1: (3+1)^2

4^2=16

Step 2: 20-16

20-16=4

Step 3: Calculate what is outside parenthesis/bracket

33-3(4)=21