Racionalizar :[tex] \ frac{5}{ \ sqrt{7} + \ sqrt{2} } [ / tex]a)[tex] \ sqrt{5} - \ sqrt{2} [ / tex]b)[tex] \ sqrt{7} - \ sqrt{2} [ / tex]c)[tex] \ sqrt{2} - \ sqrt{7} [ / tex]d)[tex] \ sqrt{7} + \ s?
Racionalizar : [tex] \ frac{5}{ \ sqrt{7} + \ sqrt{2} } [ / tex] a) [tex] \ sqrt{5} - \ sqrt{2} [ / tex] b) [tex] \ sqrt{7} - \ sqrt{2} [ / tex] c) [tex] \ sqrt{2} - \ sqrt{7} [ / tex] d) [tex] \ sqrt{7} + \ sqrt{2} [ / tex].