Math: exam tomorrow! urgent - how would i go about doing this

[From: ] [author: ] [Date: 12-11-06] [Hit: ]

http://www.admissionstests.cambridgeasse…

q9 guys

can anyone please fully explain it to me?:)

http://www4a.wolframalpha.com/Calculate/…
Click the link

Get a calculator and type it in.

That's the only way i was taught

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