Ahmed found the product of (2/3g^2−6n^)2

using the area model. His partial work is shown. What is the partial product that goes in the orange box? What is the partial product that goes in the blue box? What is the product of (2/3g^2−6n)^2
written in standard form?(3 points)

1 answer

To find the product of \((\frac{2}{3}g^2 - 6n)^2\) using the area model, we can start by recognizing that this expression is a perfect square trinomial of the form \((a - b)^2\), where \(a = \frac{2}{3}g^2\) and \(b = 6n\).

The expansion of \((a - b)^2\) is given by:

\[ a^2 - 2ab + b^2 \]

We will calculate each term step by step:

  1. Calculate \(a^2\): \[ \left(\frac{2}{3}g^2\right)^2 = \left(\frac{2}{3}\right)^2 (g^2)^2 = \frac{4}{9}g^4 \]

  2. Calculate \(2ab\): \[ 2 \cdot \frac{2}{3}g^2 \cdot 6n = 2 \cdot \frac{2 \cdot 6}{3}g^2 n = \frac{24}{3}g^2 n = 8g^2 n \]

  3. Calculate \(b^2\): \[ (6n)^2 = 36n^2 \]

Now, we can substitute these values into the expansion formula:

\[ \left(\frac{2}{3}g^2 - 6n\right)^2 = a^2 - 2ab + b^2 = \frac{4}{9}g^4 - 8g^2n + 36n^2 \]

Now, let's identify the operations for the orange and blue boxes in the area model:

  • The orange box is likely where we place the product \(a^2\) which is \(\frac{4}{9}g^4\).
  • The blue box represents the product \(b^2\) which is \(36n^2\).

Finally, writing the final product in standard form, we have:

\[ \frac{4}{9}g^4 - 8g^2n + 36n^2 \]

In summary:

  • Orange box: \(\frac{4}{9}g^4\)
  • Blue box: \(36n^2\)
  • Full product in standard form: \(\frac{4}{9}g^4 - 8g^2n + 36n^2\)
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