1-O numero √18-√8-√2 é igual a : (a)√18 (b)2√3 (c)0 (d)4


2-A Expressao com radicais √8-√18+2√2 é igual a : (a)√2 (b)√12 (c)-√8 (d)-3√2


3-Simplificando a expressao 3√2-2√18+3√72 obtemos (a)3√2 (b)24√2 (c)15√2 (d)√2
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