Question

Simplify 5(4[3(2+x)])-5(-4[-3(2-x)])

Answer 1

@iGreen

Answer 2

@gudden @aajugdar

Answer 3

you just have to multiply and solve

Answer 4

.. ._. I knew that.. but howwww

Answer 5

@efco_chen

Answer 6

@sammixboo

Answer 7

5(4[3(2+x)])-5(-4[-3(2-x)])

First of all multiply -4[-3(2-x)]

Then multiply it with 5...

Then subtract it from the following resultant
4[3(2+x)]
multiplied by 5...

Answer 8

BTW.. did you notice something special in this question ??
It has got a super easy way of solving too..!

Answer 9

12(-8-(-4x)) x 5?

Answer 10

No, I just see a bunch of numbers clustered together with a bunch of barracks and parentheses.

Answer 11

@mathmale

Answer 12

look at the question carefully
5(4[3(2+x)])-5(-4[-3(2-x)])

Can you see that first it has got something in common... ?

Answer 13

*first and second term have

Answer 14

The 5.

Answer 15

@kemist: You called? Exactly what do you need from me?

The key to solving this problem lies in understanding "order of operations" rules. In this case, anything eiwthin parentheses has to be done first. Next, any multiplication has to be done BEFORE any addition / subtraction. Are you following these rules?

Answer 16

Alright 5 is correct....
Can you see that 4 and 3 are common too!

And as mathmale said... Follow the BODMAS...

Answer 17

PEMDAS Please excuse my dope a** swag. No I jk lol. Okay, let me try again.

Answer 18

So are 2 and x @gudden

Answer 19

B = bracket
O = open
D = division
M = Multiplication
A = addition
S = subtraction....

Answer 20

^ I've never learned that

Answer 21

P= Parentheses
E= Exponents
M= Multiply
D= Divide
A= Add
S= Subtract

Answer 22

Well that's a single term..!
( ) any thing in this represents a single term..!
And you cannot take that in common since they got different sings...!

But if you notice the other numbers as I mentioned... i.e. 5,4 and 3.. are of opposite signs too! But we can leave a negative sign behind...^_^

Answer 23

Okay, never knew that either. But I'm following.

Answer 24

Order of operations rules are of critical importance. both in communicating methematical expressions to others and in interpreting mathematical expressions communicated to you, and you'll be on the same wavelength.

It's only when these rules are not followed do we get into trouble, as in typing in mathematical expressions that could be interpreted in more than one way.

Answer 25

5(4[3(2+x)])-5(-4[-3(2-x)])

5(4[6+3x)])-5(-4[-6-x])
5(24+12x)-5(-24+(-12x))
120+60x-(-120)+(-60x)

Answer 26

I don't know I'm just putting numbers together.

Answer 27

iQuit

Answer 28

A little correction...
5(-4[-6-x])

Multiply the x with 3 too!

And - 3*-x = +3x...

^_^

That's the only mistake....
Just correct it.. and your answer would be correct...^_^

Answer 29

Focusing on part of the expression provided by Kemist:

5(4[3(2+x)])

Start on the inside and work your way out, of course following order of operations rules all the way.

3((2+x) must be done first. Why? Because it's inside brackets: [3(2+x)]. Result?
6+3x.

Then we have 5(4(6+3x)).

Inside the outer pair of parentheses we have 4(6+3x). This must be done now. Result:
24-12x.

Now we have 5(24+12x). What next?

Answer 30

So, what's the answer? ._. My head's starting to hurt.

Answer 31

Move to the next brackets right?

Answer 32

Now you try simplifying the 2nd term of the given expression.

Sorry about your head, Kemist, but this is not a place to ask for answers. Please follow my example and try simplifying that second term. Or, take a break and come back to this later on.

Answer 33

You try it. I'll comment. But I'd like to see you involved, doing something, even if you're not completely sure of what to do.

Answer 34

We are now focusing on -5(-4[-3(2-x)]) only, and wish to simplify it.

Answer 35

It's a test, can't take a break. Okay so 2nd term is -5(-4[-3(2-x)]) Like you said inside the brackets so [-3(2-x)] = -6-(-3x) = -5(-4(-6-3x) ?

Answer 36

In -5(-4[-3(2-x)]), we have to focus on what's inside those square brackets first, yes. Try again on that. Watch your signs carefully.

Answer 37

That's what I was doing. My numbers are wrong or the signs? @mathmale

Answer 38

@iGreen

Answer 39

The signs are going wrong...

Answer 40

Okay -5(-4(-6+3x)?

Answer 41

Start over. Focus on the innermost brackets and do the work INSIDE those brackets first, making sure that your resulting signs are correct.

Answer 42

-5(-4[-3(2-x)]) = [-3(2-x)] = -6+3x = -5(-4(-6+3x) ?

Answer 43

5(24+12x)-5(-4(-6+3x) = 5(24+12x)-5(24+(-12x)

Answer 44

Better. You had a sign error before. to keep matters straight, let's do this problem step by step. Focus on the innermost brackets / parentheses: -3(2-x). Nothing can be done inside those parentheses, so move on to what's inside the square brackets: -3(2-x)]. Simplify that, please.

Answer 45

120+60x-120+60x FINAL ANSWER D:

Answer 46

Okay, -6-3x

Answer 47

No. Sign error, again.

Try again, please.

Answer 48

-6+3x

Answer 49

Better. See why I wanted you to do this problem step by step?

Then -5(-4[-3(2-x)]) becomes -5(-4[-6+3x]). What next? Explain in words what's next, before you actually do the work.

Answer 50

Multiply the -4 with the numbers in parentheses?

Answer 51

Right? @mathmale

Answer 52

Yes. I'd phrase it this way: "Multiply the quantity within the square brackets by -4." do that now, please. Hold the -5( ) until later.

Answer 53

-5(24-12x)

Answer 54

Right or wrong?

Answer 55

@SkylarLee Do this.