Maths question

[So]

Where do the brackets go?

√25 + 5 x 3 - 4 = 6

[So]

g4ry13 said:

6? Are you sure that's the right answer?

Perhaps a bit late for me but you can put those brackets wherever the hell you like and it's not going to work.

The closest I can get is 5.48 and round it up. But apparently that's not allowed.

I didn't go to school the day they did numbers, but I was hoping someone with a proper ejumication could work it out.

[g4ry13]

√25 + (5 x (3 - 4)) = 6

Been a while but I think that's possible

I deleted my other post after looking at it for a few more seconds. Double negative becomes +ve.

[Einion Yrth]

Don't need any, BODMAS is enough, but you have to remember that sqrt(25) has both a positive and negative solution.

[red_slr]

So said:

Where do the brackets go?

?25 + 5 x 3 - 4 = 6

5 x 3 = 15 - 4 = 11 minus sq root of 25 (5) is 6.

So √25 + (5 x 3 - 4) = 6

But that would equal 11..... not 6.... I am confused... I only got a C in GCSE maths...

[dtmpower]

So said:

Where do the brackets go?

?25 + 5 x 3 - 4 = 6

sqrt ( 25 + ( ( 5 x 3 ) - 4 ) ) = sqrt ( 25 + 15 - 4 )

[220s plenty]

What is the context - is this an equation you've derived yourself or are you seeking a solution to a posed question?

In either case *BODMAS dictates which order the equation should be solved.

*(Brackets / Order / Divide / Multiply / Add / Subtract)

EDIT - sorry I misread the question!!

Edited by 220s plenty on Tuesday 31st October 20:30

[g4ry13]

I've jumped the gun. I realised mine doesn't work out.

I'm going to slide out of this. Is the question right? You sure it shouldn't =16?

[SS2.]

sqrt(25+(5 x 3)-4)

[So]

g4ry13 said:

I've jumped the gun. I realised mine doesn't work out.

I'm going to slide out of this. Is the question right? You sure it shouldn't =16?

Just to make you all feel better about yourselves, this is an 10-year old's homework.

We are assuming that the question is posed correctly.

[Einion Yrth]

sqrt(25) is both 5 and -5, substitute -5 for the term, and using BODMAS it just works. No brackets necessary.

[bearman68]

Einion Yrth said:

Don't need any, BODMAS is enough, but you have to remember that sqrt(25) has both a positive and negative solution.

Clever, maybe you can do my tax return?

[So]

SS2. said:

sqrt(25+(5 x 3)-4)

We have a winner.

[CaptainSlow]

So said:

SS2. said:

sqrt(25+(5 x 3)-4)

We have a winner.

Why can't you just do

sqrt(25+5 x 3-4)

?

[Einion Yrth]

CaptainSlow said:

So said:

SS2. said:

sqrt(25+(5 x 3)-4)

We have a winner.

Why can't you just do

sqrt(25+5 x 3-4)

?

If for some reason you insist on only considering the positive root, you could. My solution shows a greater understanding of mathematics and requires no brackets at all. Ho hum...

[CaptainSlow]

Einion Yrth said:

If for some reason you insist on only considering the positive root, you could. My solution shows a greater understanding of mathematics and requires no brackets at all. Ho hum...

I'm not insisting anything, I just wanted to know why an extra set of brackets was used. Knowing that a positive integer has both a positive and negative root is GCSE level so not a particularly great understanding.

[Einion Yrth]

CaptainSlow said:

Einion Yrth said:

If for some reason you insist on only considering the positive root, you could. My solution shows a greater understanding of mathematics and requires no brackets at all. Ho hum...

I'm not insisting anything, I just wanted to know why an extra set of brackets was used. Knowing that a positive integer has both a positive and negative root is GCSE level so not a particularly great understanding.

"You" was not pointed at you specifically, could have been "one"; the original question as posed by the OP was "where do the brackets go?" and the parsimonious answer is "they don;t, none are needed" HTH.

[deeen]

The question says there are brackets, and the question is designed for a 10 year old...

[Einion Yrth]

deeen said:

The question says there are brackets, and the question is designed for a 10 year old...

If one insists on brackets then Captain Slow is probably the optimal answer, although
(√25 + 5 x 3 - 4) = 6 has a shout, too.

[Desiato]

?(25 + 5 x 3 - 4) = 6