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/sci/ - Science & Math

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1646605 No.1646605 [Reply] [Original]

I have an equation that i can't solve. Here's the part i have a problem with: 0,5x(4x-8)

I know that i'll have to first multiply 0,5x with 4x,
and then 0,5x with 8.
The problem is that i don't know what 0,5x times 4x is, as i don't know how to multiply x with x.

Pic unrelated

>> No.1646611
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1646611

Ok .. what?

>> No.1646621

>0,5
>frenchfag detected

>> No.1646625

There's a simple convention for this:
x times x = y
x times x times x = z

There are symbols for larges powers of x, but they are esoteric and rare. Algebra doesn't typically deal with anything larger than a cube.

So your answer is:

2y - 4x

>> No.1646630

Underageb@. Also homeworkb@.

GTFO

>> No.1646637

>>1646625
Holy shit a sensible answer from 4chan.

>> No.1646639 [DELETED] 

First of all, that's not an equation. I'll assume you mean 0.5x(4x-8) = 0. Here's wat do.

2x^2 - 4x = 0

x(x-4) = 0

x= 0 or x = 4.

>> No.1646645

OP here

I figured it out.

0,5x times 4x is 2x^2

Sorry for being a bother.

>>1646625
I don't quite get what you are saying but according to my math-book where i have a list of all the answers, it's not right what you are saying. At least not in this case.

>> No.1646656

>>1646621
>or someone else that doesn't use retarded american notation detected

>> No.1646654

20x-40x

>> No.1646666

OP here

>>1646656
Danefag actually - You know, the guys who drew the Prophet Muhammad.

>> No.1646667

>>1646625
best system ever

>> No.1646670

Is the OP a retard?

>> No.1646672

>>1646656
>implying 0,5 is less retarded than saying 0.5

>> No.1646683

>>1646672
But it is: we use commas to denote breaks in large integers and the decimal point is the separator between integer and non-integer.

>> No.1646698

>>1646656
Swefag here.

While the Americans have retarded units, I MUCH MUCH MUCH prefer the decimal period as opposed to the decimal comma. It DOESN'T MAKE SENSE to use a comma.

>> No.1646737

When I read the comma I thought the problem was

5x(4x-8)
0(4x-8)
and to find both solutions.

>> No.1646743

>>1646737
is your first name by chance "wolfram", mr. alpha?