Fill in the blanks:
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Fill in the blanks:
To solve this problem, let's consider the expansion of the expressions:
First, expand each square:
Expanding these expressions, we get:
Adding the two expanded forms gives:
Now rearrange the terms in a form similar to the given expression:
The goal is to arrange the polynomial as: .
Since now we want: .
Create matching forms:
Therefore, the correct values to fill in are .
Thus, our complete expression is:
Hence, the answer is:
Declares the given expression as a sum
\( (7b-3x)^2 \)
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