Question
Find : $(a + b)(a + b)$
✓
Answer
$(a + b)(a + b)$
$= (a + b)^2$
$= a \times a + a \times b + b \times a + b \times b$
$= a^2+ab+ab+ b^2$
$= a^2+ b^2+ 2ab$
$= (a + b)^2$
$= a \times a + a \times b + b \times a + b \times b$
$= a^2+ab+ab+ b^2$
$= a^2+ b^2+ 2ab$
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