4-2^2+5x3-2=11

[thegreenhell]

FredClogs said:

(4(-2^2)+5)x3-2=11

I make that 61

[FredClogs]

thegreenhell said:

FredClogs said:

(4(-2^2)+5)x3-2=11

I make that 61

Yeah there should be brackets around the 3-2... Even then it - 11... I'm ooot

[thegreenhell]

Then it would be 21.

-2^2 = +4

[FredClogs]

thegreenhell said:

Then it would be 21.

-2^2 = +4

-2 squared is - 4 but its irrelevant, like I said I'm ooot.

[essayer]

FredClogs said:

-2 squared is - 4 but its irrelevant, like I said I'm ooot.

-2 x -2 is definitely 4

[chemistry]

Thanks all!

Glad I’m not the only one stumped! Once my son gets the answer back from his teacher I’ll post it here

[FredClogs]

essayer said:

FredClogs said:

-2 squared is - 4 but its irrelevant, like I said I'm ooot.

-2 x -2 is definitely 4

Yes, but - 2 squared isn't - 2 x - 2 it's - 2 squared...

http://bfy.tw/KHXQ

[Shaoxter]

essayer said:

FredClogs said:

-2 squared is - 4 but its irrelevant, like I said I'm ooot.

-2 x -2 is definitely 4

You could have it as either -(2^2) = -4 or (-2)^2 = 4
But that doesn't seem to help things... It's annoying that the answer is a prime number.

[FredClogs]

Or - 2(^2)...



I'm definately ooot now... (I see you Sidicks...)

[4x4Tyke]

chemistry said:

Driving me mad...trying to help my son add brackets to this equation to make it correct.

Please help!

I can get -11 with, I think.

4 ( - 2^2) + 5 * (3 - 2)

[thegreenhell]

Where's Rachel Riley when you need her?

[Leithen]

Any news from school?

We need closure!

[sidicks]

FredClogs said:

Or - 2(^2)...



I'm definately ooot now... (I see you Sidicks...)

-(2^2) = -4
(-2)^2 = 4

[4x4Tyke]

Leithen said:

Any news from school?

We need closure!

I'm pretty sure the teacher has made an error, good luck getting them to admit it to a pupil.

[Simpo Two]

4x4Tyke said:

I'm pretty sure the teacher has made an error...

My thought too. If PH can't crack it in two days something's wrong.

Or perhaps he wants the answer 'It's impossible'?

[chemistry]

Leithen said:

Any news from school?

We need closure!

My son has maths again tomorrow, so should get the answer then. Once I know what it is, I'll post it here (even if the answer is "Sorry, there was a typo...").

Thanks again for all of the posts/suggestions!

[El Joffo]

chemistry said:

Driving me mad...trying to help my son add brackets to this equation to make it correct.

Please help!

((4 - 2)^2) + (5 x (3 - 2)) = 1(1)

(-2^2) + (5 x 1) = 1(1)

-4 + 5 = 1 x 1

1 = 1

Or is that cheating? Also, -2^2 can be either -4 or +4 depending on the context.

Edited by El Joffo on Thursday 11th October 18:56

[Einion Yrth]

El Joffo said:

-2^2 can be either -4 or +4 depending on the context.

Edited by El Joffo on Thursday 11th October 18:56

No it can't; roots have positive and negative solutions, squares are always positive.

[El Joffo]

Einion Yrth said:

No it can't; roots have positive and negative solutions, squares are always positive.

By jove you're right. Ruins that idea!

[FredClogs]

El Joffo said:

Einion Yrth said:

No it can't; roots have positive and negative solutions, squares are always positive.

By jove you're right. Ruins that idea!

He's not right, see calculator and lmgtfy links in post above, it's pefactly acceptable and correct to say - 2^2 is - 4. I believe this is the solution and congrats for thinking out the box.

This is a beautiful example, I do believe you're the only one who read this and thought to put brackets after the equals. Bravo.