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Is the BBC correct here

It's 50 years since I studied Maths so thought I'd take a look at the new BBC Bitesize articles to help with home tuition. I found an article relating to Surds and had never heard of them so had a read here https://www.bbc.co.uk/bitesize/articles/z46q96fI then took the test and was surprised at the answer to Q4 which was

I can’t get the link to load -says page no available...

Assuming you're talking about the question below, the answer is wrong. It should be

\sqrt{42}

which can't be simplified. Or the area should be 25 to give a side length of 5.

Here's the correct link by the way:

https://www.bbc.co.uk/bitesize/articles/z46q96f

OP

Original post by Notnek

Assuming you're talking about the question below, the answer is wrong. It should be

\sqrt{42}

which can't be simplified. Or the area should be 25 to give a side length of 5.

Yes that's the one. So the BBC are trying to help educate children by giving the wrong answer!

Original post by OldMan2

Yes that's the one. So the BBC are trying to help educate children by giving the wrong answer!

Just about every maths book/website/... will have the odd typo mistake. The bitesize stuff is pretty good, in general.

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