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**tony123****Member**- Registered: 2007-08-03
- Posts: 189

Find a solution to the system of simultaneous equations

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**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 102,339

Hi tony123;

**In mathematics, you don't understand things. You just get used to them.****If it ain't broke, fix it until it is.** **A number by itself is useful, but it is far more useful to know how accurate or certain that number is.**

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**bob bundy****Moderator**- Registered: 2010-06-20
- Posts: 7,501

hi tony123,

Here's how I'd tackle this.

so put

This quadratic has two solutions

You can substitute this back in (2) and also make (say) x the subject, and hence get an equation in y.

Bob

*Last edited by bob bundy (2012-01-15 00:42:17)*

Children are not defined by school ...........The Fonz

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