Expand $(2x + 3y)^{2}$.
A$4x^{2} + 9y^{2}$
B$4x^{2} + 12xy + 9y^{2}$
C$4x^{2} + 6xy + 9y^{2}$
D$2x^{2} + 6xy + 3y^{2}$
Answer & Solution
Correct answer: B. $4x^{2} + 12xy + 9y^{2}$
$(2x)^{2} + 2(2x)(3y) + (3y)^{2} = 4x^{2} + 12xy + 9y^{2}$.
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