Help w/surds??

CorpusLuteum

The question is to simplify :
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And I got 9√6 but supposedly the answer is -√6 ???

(edited 6 years ago)

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Original post by CorpusLuteum

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How did you get

9\sqrt{6}

Reply 3

honeybean

Sorry if its confusing but if you re write with square roots instead it should make sense

Reply 4

CorpusLuteum

√24 + √150 - 2√ 96

(√4 x √6) + (√25 x √6) - ( 2 x √ 16 x √6 )

2√6 + 5√6 + 2√6 --> this is what I did wrong I didn't multiply it I added it, it should be (-8√6)

Thanks!! Sorry about this!
@RDKGames

Reply 5

CorpusLuteum

@honeybean
@1861

Sorry, thanks for the help guys -- I made such a stupid mistake :P

Reply 6

thotproduct

root 24 can be written as root 4 x 6 and becomes 2root6
root 150 can be written as root 25 x 6 and becomes 5root6
for 2root96, let's first split up the 2 and the root96 to simplify this
root 96 is the same as saying root 16 x 6 and is simplified to 4root6, since there are 2 lots of this, this becomes 8root6

Can you follow through with this now?

Reply 7

RDKGames

Study Forum Helper

@Notnek Amazing how most often people jump to the 'full solution trigger' as soon as they see a GCSE question. Wish they all did that for my undergrad Q's :hmmmm2:

Reply 8

CorpusLuteum

Original post by RDKGames

@Notnek Amazing how most often people jump to the 'full solution trigger' as soon as they see a GCSE question. Wish they all did that for my undergrad Q's :hmmmm2:

hahaha

Reply 9

Notnek

Original post by RDKGames

@Notnek Amazing how most often people jump to the 'full solution trigger' as soon as they see a GCSE question. Wish they all did that for my undergrad Q's :hmmmm2:

Yes I've noticed that too :smile:

They've been removed now.