Question

Where is the order of operations to simplify the following expression

Answer 1

You have the next expression:

`9+\sqrt[]{81}-4\cdot2`

The order of operations is:

1. Multiplications and divisions (left to right)

2. Addition and substraction (left to right)

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As you have a square root this is the first operation:

As 81 is a perfect square you know that:

`\sqrt[]{81}=9`
`9+9-4\cdot2`

Then, You make the multiply of (4*2)

`9+9-8`

And finally you make the additions and substractions:

`9+9-8=10`