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F) \( \left(\frac{x}{2}+1\right)^{2} \)

Ask by Willis Nichols. in Brazil
Mar 11,2025

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Tutor-Verified Answer

Answer

A expressão \(\left(\frac{x}{2}+1\right)^{2}\) simplificada é \(\frac{x^2}{4} + x + 1\).

Solution

1. Identifique a expressão na forma \((a+b)^2\), onde: - \( a = \frac{x}{2} \) - \( b = 1 \) 2. Utilize a fórmula do quadrado da soma: \[ (a+b)^2 = a^2 + 2ab + b^2 \] 3. Calcule cada termo: - Primeiro termo: \[ a^2 = \left(\frac{x}{2}\right)^2 = \frac{x^2}{4} \] - Segundo termo: \[ 2ab = 2 \cdot \frac{x}{2} \cdot 1 = x \] - Terceiro termo: \[ b^2 = 1^2 = 1 \] 4. Some os termos encontrados: \[ \frac{x^2}{4} + x + 1 \] Portanto, a expressão expandida é: \[ \frac{x^2}{4} + x + 1 \]

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The Deep Dive

Did you know that the expression \( \left(\frac{x}{2}+1\right)^{2} \) is a perfect square trinomial? When you expand it, you'll get \( \left(\frac{x}{2}\right)^{2} + 2\cdot\frac{x}{2}\cdot1 + 1^{2} \), which simplifies to \( \frac{x^2}{4} + x + 1 \). This form is super useful for solving equations or analyzing the behavior of quadratic functions! And speaking of quadratic functions, this particular expression can show up in real-world problems, like calculating the area of a square when the side length is represented by \( \frac{x}{2} + 1 \). You can visualize it as the area of a larger or smaller configuration, depending on \( x \), helping you grasp the effects of different values on the overall area!

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