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September 19, 2014

September 19, 2014

Posted by **Jayden Haddy** on Sunday, August 18, 2013 at 11:13am.

I really have no idea how to prove it so pls help

- maths -
**Damon**, Sunday, August 18, 2013 at 12:18pmone root: [-b+sqrt(b^2-4ac)]/2a

squared: b^2 -2bsqrt(b^2-4ac) + b^2-4ac]/4a^2

second root : [-b-sqrt(b^2-4ac)]/2a

squared: b^2 +2bsqrt(b^2-4ac) + b^2-4ac]/4a^2

sum: [ 4 b^2 - 8ac ] / 4a^2

= [b^2 -2ac]/a^2

now I have no idea what m:n means so you have to take it from there.

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