Question

$\sqrt{0.01 \times \sqrt{100 - \frac{1}{2} } } \times \frac{2}{5} - 1$
por favor ajuda !​

Answer 1

Resposta:

- 1 /10

Explicação passo-a-passo:

$\sqrt{0,01} .\sqrt{100} -\frac{1}{2} +\frac{2}{5} -1=\\\sqrt{0,01.100} -\frac{1}{2} +\frac{2}{5} -1=\\\\\sqrt{1} -\frac{1}{2} +\frac{2}{5} -1=\\\\1-\frac{1}{2} +\frac{2}{5} -1=\\\\\frac{2}{5} -\frac{1}{2} =\frac{4-5}{10}=-\frac{1}{10}$       Obs.: m.m.c de 5 e 2 = 10

Answer 2

Resposta:

$\sf \displaystyle \sqrt{0,01} \times \sqrt{100} -\: \dfrac{1}{2} + \dfrac{2}{5} - 1 =$

Resolução:

$\sf \displaystyle \sqrt{0,01} \times \sqrt{100} -\: \dfrac{1}{2} + \dfrac{2}{5} - 1 = \quad \gets \text{\sf extrair a raiz quadrada.}$

$\sf \displaystyle 0,1 \times 10 -\: \dfrac{1}{2} + \dfrac{2}{5} - 1 = \quad \gets \text{\sf multiplicar.}$

$\sf \displaystyle 1 -\: \dfrac{1}{2} + \dfrac{2}{5} - 1 = \quad \gets \text{\sf Cancelar 1 com -\: 1.}$

$\sf \displaystyle -\: \dfrac{1}{2} + \dfrac{2}{5} = \quad \gets \text{\sf m. m.c de (2 ; 5) = 10}$

$\sf \displaystyle -\: \dfrac{5}{10} + \dfrac{4}{10} = \quad \gets \text{\sf somar o numerador e conservar o denominador.}$

$\boldsymbol{\sf \displaystyle -\: \dfrac{1}{10} }$

Explicação passo-a-passo: