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# Surd Help watch

1. Hello everyone, Can someone please help solve this for me and then explain it as if you're speaking to an idiot please?

2. Three things you need to know here:
1.
2.
3.

Think what might be with relation to this question, and then think what and might be... then will be quite obvious.
4. (Original post by e-lover)

I presume you mean expand or simplify. You should not use the word 'solve'
5. (Original post by e-lover)

now try and solve it as a quadratic.

Does this help?
6. (Original post by steve2005)
I presume you mean expand or simplify. You should not use the word 'solve'
You're talking to a mathmo idiot, sir
7. (Original post by e-lover)
Nope.

Here are some steps; try and do it without expanding them all:
Step 1

Step 2

Step 3

Step 4

(Original post by gemmalouise)

now try and solve it as a quadratic.

Does this help?
Spoiler:
Show
What's the point in doing that when ?
8. (Original post by gemmalouise)

now try and solve it as a quadratic.

Does this help?
Does that make the answer 28 then?
9. (Original post by e-lover)
Does that make the answer 28 then?
by my calculations, yes.
10. ...
11. (Original post by gemmalouise)
by my calculations, yes.
Yayyyyy!!!!!!

Can I get a confirmation?
12. Confirmed
13. Thank you very much to everyone for helping me 'solve' that. I can now live a full and varied life again.
14. (Original post by e-lover)
Thank you very much to everyone for helping me 'solve' that. I can now live a full and varied life again.
what did you need it for?
15. (Original post by e-lover)

expand the brackets to get

(sqrt7 + sqrt7) x (sqrt7 + sqrt7)

then expand the brackets to get 7 + 7 + 7 + 7

you should then get an answer of 28

hope that helps
16. (Original post by Ben77mc)
what did you need it for?
For a test I'm working for. It's one of those standardized ones.

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