Question

qual o valor de √(1+√(289/√(21+√(121

a)3/8 b)4/7 c)3/4 d)5/11​

Answer 1

Resposta:

Letra C

Explicação passo-a-passo:

${\sqrt{1+\sqrt{289} } \over\sqrt{21+\sqrt{121} } }=\\ \\ ={\sqrt{1+17} \over\sqrt{21+11} }\\ \\ ={\sqrt{18} \over\sqrt{32} }\\ \\ =\sqrt{{18\over32}} \\ \\ simplificando\\ \\ =\sqrt{18:2\over32:2}} =\sqrt{{9\over16}} =\fbox{ {3\over4} }$