Questions: ∑xy=□ ∑x²y=□ (∑xy)²=□

Transcript text: \[ \begin{array}{l} \sum x y=\square \\ \sum x^{2} y=\square \\ \left(\sum x y\right)^{2}=\square \end{array} \]

Solution

Step 1: Calculate \( \sum x y \)

To find the sum of the products of \( x \) and \( y \), we compute:

\[ \sum x y = 17559 \]

Step 2: Calculate \( \sum x^{2} y \)

Next, we calculate the sum of the products of \( x^2 \) and \( y \):

\[ \sum x^{2} y = 1175755 \]

Step 3: Calculate \( \left( \sum x y \right)^{2} \)

Finally, we square the sum of \( x \) and \( y \):

\[ \left( \sum x y \right)^{2} = 308318481 \]

\[ \sum x y = \boxed{17559} \] \[ \sum x^{2} y = \boxed{1175755} \] \[ \left( \sum x y \right)^{2} = \boxed{308318481} \]

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