Can someone tell me if these answers are correct please?

1. what are the steps of the order of operation?
do all operations within grouping symbol first.
evaluate all powers before other operations.
multiply & divide in order from left to right.
add & subtract in order from left to right.

The steps you've mentioned for the order of operations are generally correct. However, there seems to be a small error in the first step.

The correct order of operations, commonly known as PEMDAS or BODMAS, includes the following steps:

1. Perform operations within grouping symbols (parentheses, brackets, etc.) first. This includes evaluating expressions inside parentheses or brackets before moving on to other operations.

2. Evaluate any exponents or powers. This means simplifying expressions with exponents or taking powers of numbers before moving on to the next step.

3. Perform multiplication and division in order from left to right. This means carrying out multiplications and divisions in the order they appear from left to right in the expression.

4. Perform addition and subtraction in order from left to right. This means carrying out additions and subtractions in the order they appear from left to right in the expression.

So, the correct steps are:

1. Perform operations within grouping symbols.
2. Evaluate exponents or powers.
3. Perform multiplications and divisions from left to right.
4. Perform additions and subtractions from left to right.

To validate the correctness of an expression, you can follow these steps. However, if you have a specific expression or equation you would like to check, please provide more information, and I'll be happy to help you further.

do the operations within groupings first.