Respostas

2013-03-14T00:03:04-03:00

Apenas junte as raizes iguais:\sqrt{12}+\sqrt{23}*\sqrt{4}-\sqrt{4}+\sqrt{23}*\sqrt{4}+\sqrt{4}+\sqrt{23}=\\ \sqrt{12}+\sqrt{23}(\sqrt{4}+\sqrt{4}+1)=\\ \sqrt{12}+\sqrt{23}(2\sqrt{4}+1)

no final coloquei \sqrt{23} em evidencia