Mathematical dispute

[Vertigo-X]

yanamaster said:

Boutros said:

yanamaster said:

Boutros said:

yanamaster said:
Well, i stand by the answer 2. If the original equation was 48/2*(3+9) then sure, the answer would 288, but when we have a parenthesis that looks like 2(3+9), then the 2 is part of the parenthesis and has to be calculated with what lies inside the brackets.

2(3+9) = 2*(3+9)

It's the exact same. And in both case 2 isn't part of the parenthesis.

Ah, yes, of course that there is a multiplication sign in both situations, but tell me this then, how would you solve this then:

6x²+x / x*(4x+2x+1)

6x²+x / x(4x +2x +1)

?

6x² + 1/(4x+2x+1)

6x² + 1/(4x+2x+1)

lol

Well the answer is 1 for me.

6x² + x/x(6x+1) = 6x² + x/6x² + x = 1

We will have to agree to disagree but honestly, the first equation that i gave you, i would have solved it just like you, but the second one indicates that the x before the parenthesis is part of the parenthesis and should not be dealt with until you solve everything inside and beside the parenthesis. 

What.

 

How is the answer one? By your own method the expressions (i.e. this isn't an equation; it would have to equal something, like zero from the start, to be one) work out as follows:

6x²+x / x*(4x+2x+1)

6(x^2) + x / [x * (4x + 2x + 1)] = 6(x^2) + x / [6 * (x^2) + x] = 6(x^2) + 1 / (6x + 1)

Unless it equals one from the start, this expression has no definitive answer.

 

This is how I'd simplify it:

6(x^2) + x / x * (4x + 2x + 1) = 6(x^2) + (1 / 1) * (6x + 1) = 6(x^2) + 6x + 1

 

I mean, just how would you guys solve this one:

7x / 14(x^2) / 7x

Would you go straight left to right, or would you pretend that 7x to the far right is back in the numerator again?