Who can solve for "x" the fastest?

Who can solve for "x" the fastest? - Printable Version

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Who can solve for "x" the fastest? - Abagail - 18.03.2014

Who can solve for "x" the fastest?

3(x+2) = 9

Ofcourse this one is easy, so feel free to give your own aswell.

Re: Who can solve for "x" the fastest? - LeGGGeNNdA - 18.03.2014

3x+6=9
3x=6+9
3/3x=15/3
x = 5

(I suck at math, don't pay attention to this. It's wrong. This forum is not for math help, you can go ask your teacher btw

)

Re: Who can solve for "x" the fastest? - Riddy - 18.03.2014

I'd expect that it'll be expand the equation before the equals, and then solve it by moving everything over so:

3x+6=9 (once expanded)

3x = 9-6 (moved over)

x = 3/3

x = 1

Re: Who can solve for "x" the fastest? - Abagail - 18.03.2014

Quote:

Originally Posted by LeGGGeNNdA

3x+6=9
3x=6+9
3/3x=15/3
x = 5

(I suck at math, don't pay attention to this. It's wrong. This forum is not for math help, you can go ask your teacher btw

)

LOL... I'm not asking for math help. I just want to see how people solve for x... In my mind I just think that the x +2 must equal 3 so it's be 3x3 which would equal 9. How-ever, you can't do this for every equation.

Re: Who can solve for "x" the fastest? - Potassium - 18.03.2014

Quote:

Originally Posted by Abagail

In my mind I just think that the x +2 must equal 3

What the hell? Is this your 1st grade maths homework?

Re: Who can solve for "x" the fastest? - Snipa - 19.03.2014

Quote:

Originally Posted by Potassium

What the hell? Is this your 1st grade maths homework?

Don't make fun of him, he'll tell his mom

Re: Who can solve for "x" the fastest? - Mauzen - 19.03.2014

Thats a thing I dont even solve but just see.
Anyone older than 12 who cant solve this correctly should probably be worried about his future in maths.

When reading the title I was hoping for some more spaced stuff.
Heres your level 2:
Who can solve this for x the fastest?

1.4x^5 - 0.3x^4 - x^3 + 17x - 1 = 0

First one to explain a possible way to solve this gets a friendly rep.
(Hint: solution dont need to be 100% exact, but exact enough, fast enough, and shouldnt require computers)

Re: Who can solve for "x" the fastest? - Potassium - 19.03.2014

Quote:

Originally Posted by Mauzen

Anyone older than 12 who cant solve this correctly should probably be worried about his future in maths.

My thoughts exactly. I'm no maths genius but if the OP is old enough to be playing SA-MP and posting coherent sentences on the SA-MP forum, yet cannot solve this simple equation on their own, then I think they should talk to their teacher about moving into a lower-level class.

Re: Who can solve for "x" the fastest? - Epixha - 19.03.2014

My answer -

Quote:

Originally Posted by Riddy

3x+6=9 (once expanded)

3x = 9-6 (moved over)

x = 3/3

x = 1

My thoughts -

Quote:

Originally Posted by Mauzen

Thats a thing I dont even solve but just see.
Anyone older than 12 who cant solve this correctly should probably be worried about his future in maths.

Re: Who can solve for "x" the fastest? - Snipa - 19.03.2014

Quote:

Originally Posted by Mauzen

Thats a thing I dont even solve but just see.
Anyone older than 12 who cant solve this correctly should probably be worried about his future in maths.

When reading the title I was hoping for some more spaced stuff.
Heres your level 2:
Who can solve this for x the fastest?

1.4x^5 - 0.3x^4 - x^3 + 17x - 1 = 0

First one to explain a possible way to solve this gets a friendly rep.
(Hint: solution dont need to be 100% exact, but exact enough, fast enough, and shouldnt require computers)

Isolate the 1.4x^5 - 0.3x^4 - x^3 by subtracting 17x - 1.

Cube root, combine like terms outside the radical, then divide by the radical.

Multiply x10 since the only term outside the radical is .1x

Stumped on this.