(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

I need the first equation simplified, the second equation solved, and the third factored. I've been trying to solve these three forever today.

2. Relevant equations

1) 6+√3 ÷ 2-2√3 (those are radical signs)

2) √k+9-√k=√3 (the k+9 is all under the radical sign)

3) (2k+3)2-(2x+3)(y-2)-20(y-2)2 (the "2" after (2k+3) ans (y-2) is suppose to be a square sign.

3. The attempt at a solution

I thought for number 1) I should use the conjugent (sp) but I wasn't sure if I foil or not and I got three different answers that don't look right. Number 2) I have no idea, I tired to make the √k by itself on one side that then square everything, but when I plugged the number I got back in the equation it didn't work so I don't know what I'm doing. Help would be MUCH appreciated.

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# I need help please

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