Question
Multiply: $(2x + 3y)(2x + 3y)$
✓
Answer
$(2x + 3y)(2x + 3y)$
$\Rightarrow 2x (2x + 3y) + 3y(2x + 3y)$
$\Rightarrow 4x^2 + 6xy + 6xy + 9y^2$
$\Rightarrow 4x^2 + 12xy + 9y^2$
$\Rightarrow 2x (2x + 3y) + 3y(2x + 3y)$
$\Rightarrow 4x^2 + 6xy + 6xy + 9y^2$
$\Rightarrow 4x^2 + 12xy + 9y^2$
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