Algebra 1ChallengeFoundations ShareFoundations · Challenge problemWhich of the following numbers is irrational?A182\dfrac{\sqrt{18}}{\sqrt{2}}218B(3+1)2(\sqrt{3} + 1)^2(3+1)2C0.27‾0.\overline{27}0.27D2.25\sqrt{2.25}2.25Check Show answer Walk through it step by step Practice more like this Review this concept