I have an Algebra exam tomorrow. Can anyone just help me revise some of the basics?

- Envy_Seven

I have an Algebra exam tomorrow. Can anyone just help me revise some of the basics?

- schrodinger

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- Clalgee

Algebra I I suspect? :)

- Envy_Seven

Yes

- Clalgee

Alright then! Let's do this :)
Give me 30 seconds.

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## More answers

- Envy_Seven

Thanks! :)

- Clalgee

No problem. So I'm going to mix it up. I will ask you for definitions, formulas, and I'll need you to simplify a few equations okay?

- Envy_Seven

Aight

- Clalgee

Alright, Let's start with Order of Operations.
Explain the steps of PEMDAS.
Then solve the equation using Order of Operations below.

- Clalgee

-2[3 -(-2)(6)]= ?

- Envy_Seven

P = Parentheses
E = Exponents?
M = Multiplication
D = Division
A = Addition
S = Subtraction

- Envy_Seven

34?

- Envy_Seven

Wait actually...

- Clalgee

Great! You've mastered the understanding of PEMDAS
But as for solving the equations.... You took a different route there

- Clalgee

1.) Parenthesis in PEMDAS
Multiply (-2)(6)= ?

- Envy_Seven

-12

- Envy_Seven

-12 - 3 = 15 because of double negative?

- Envy_Seven

3 - (-12) is how it should be written actually, right?

- Clalgee

2.) There are no exponents so we move multiplication.
Multiply -12 by _____ ? What do you think?

- Clalgee

You got it :)

- Envy_Seven

then -2 x 15 is -30?

- Clalgee

You got it again!

- Clalgee

Where did you get 34 from though?

- Envy_Seven

-2[3 -(-2)(6)]= ?
I did 3 - (-2) first for some reason

- Clalgee

Oh alright! That's fine, but just as long you knew what mistake you made :)
So now, I'm going to ask you for definitions.

- Clalgee

What is absolute value? Give me an example.

- Envy_Seven

The number between 0 and (for example, 5)?

- Envy_Seven

And if it was -7, the absolute value would be 7?

- Envy_Seven

So an example would be:
10 is the absolute value of 10 and -10

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