Question
Copy and complete the following multi-plication:
$a + b$
$\times a + b$
$a + b$
$\times a + b$
✓
Answer
$a + b$
$\times a + b $
$a^2 + ab$
$ab + b^2$
$a^2 + 2ab + b^2$
$\times a + b $
$a^2 + ab$
$ab + b^2$
$a^2 + 2ab + b^2$
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