Question

Divida e simplifique: \( \frac{4\sqrt{18}}{2\sqrt{2}} \)

Ask by Li Hobbs. in Guinea-Bissau
Jan 04,2025

Upstudy AI Solution

Tutor-Verified Answer

Answer

A expressão simplificada é \( 6 \).

Solution

Para dividir e simplificar a expressão \( \frac{4\sqrt{18}}{2\sqrt{2}} \), siga os seguintes passos: 1. **Simplifique a raiz quadrada no numerador:** \[ \sqrt{18} = \sqrt{9 \times 2} = \sqrt{9} \times \sqrt{2} = 3\sqrt{2} \] Portanto, o numerador se torna: \[ 4\sqrt{18} = 4 \times 3\sqrt{2} = 12\sqrt{2} \] 2. **Mantenha o denominador:** \[ 2\sqrt{2} \] 3. **Forme a nova fração:** \[ \frac{12\sqrt{2}}{2\sqrt{2}} \] 4. **Simplifique a fração dividindo os coeficientes e as partes com raízes:** \[ \frac{12}{2} \times \frac{\sqrt{2}}{\sqrt{2}} = 6 \times 1 = 6 \] *(Porque \( \frac{\sqrt{2}}{\sqrt{2}} = 1 \))* Portanto, a expressão simplificada é: \[ 6 \]

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The Deep Dive

Vamos simplificar a expressão \( \frac{4\sqrt{18}}{2\sqrt{2}} \). Primeiro, podemos dividir o numerador pelo denominador: \[ \frac{4}{2} = 2 \] Agora, temos: \[ 2 \cdot \frac{\sqrt{18}}{\sqrt{2}} \] Usando a propriedade das raízes, podemos simplificar \( \frac{\sqrt{18}}{\sqrt{2}} \) como \( \sqrt{\frac{18}{2}} \): \[ \frac{18}{2} = 9 \] Portanto, \( \frac{\sqrt{18}}{\sqrt{2}} = \sqrt{9} = 3 \). Agora, substituindo de volta: \[ 2 \cdot 3 = 6 \] Assim, a expressão simplificada é: \[ \frac{4\sqrt{18}}{2\sqrt{2}} = 6 \]

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