Question
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k) \( 4 \sqrt{12} \div 5 \sqrt{20} \)

Ask by Logan Washington. in Colombia
Feb 26,2025

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Tutor-Verified Answer

Answer

La expresión simplificada es \( \frac{4\sqrt{15}}{25} \).

Solution

Para simplificar la expresión k) 4√12 ÷ 5√20, seguimos estos pasos: 1. Primero, descomponemos las raíces:   • √12 = √(4·3) = 2√3   • √20 = √(4·5) = 2√5 2. Reescribimos la expresión usando estas equivalencias:   4√12 = 4 · (2√3) = 8√3   5√20 = 5 · (2√5) = 10√5   Entonces, la división es:   8√3 ÷ 10√5 = (8√3) / (10√5) 3. Simplificamos el coeficiente numérico:   8/10 = 4/5, de modo que tenemos:   (4√3) / (5√5) 4. Para racionalizar el denominador, multiplicamos numerador y denominador por √5:   (4√3 / (5√5)) · (√5/√5) = (4√(3·5)) / (5·5) = (4√15) / 25 Por lo tanto, la expresión simplificada es:   (4√15) / 25

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Bonus Knowledge

To simplify \( 4 \sqrt{12} \div 5 \sqrt{20} \), let's break it down! First, simplify the square roots: \( \sqrt{12} = 2\sqrt{3} \) and \( \sqrt{20} = 2\sqrt{5} \). Now substitute these into the expression: \[ 4 \sqrt{12} = 4 \cdot 2\sqrt{3} = 8\sqrt{3} \] \[ 5 \sqrt{20} = 5 \cdot 2\sqrt{5} = 10\sqrt{5} \] Now, we can rewrite the expression: \[ \frac{8\sqrt{3}}{10\sqrt{5}} = \frac{8}{10} \cdot \frac{\sqrt{3}}{\sqrt{5}} = \frac{4}{5} \cdot \sqrt{\frac{3}{5}} \] So, \( 4 \sqrt{12} \div 5 \sqrt{20} = \frac{4}{5} \sqrt{\frac{3}{5}} \).

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