October 2018 1 15 Report

a) (\sqrt{5}-\sqrt{3})(\sqrt{5}+\sqrt{3})=

b) ((\sqrt{11}+2)(\sqrt{11}-2)

c) (\sqrt{15}-\sqrt{6})(\sqrt{5}-\sqrt{2} )

d)(\sqrt{7} +4)(4+\sqrt{7})

e)(2\sqrt{2}-1)(2\sqrt{2}+1)

f)(\sqrt{20}-\sqrt{1\sqr8})(\sqrt{20}+\sqrt{18})


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