Expand $(a - b)^{2}$.
A$a^{2} + 2ab + b^{2}$
B$a^{2} - 2ab + b^{2}$
C$a^{2} - b^{2}$
D$a^{2} + b^{2}$
Answer & Solution
Correct answer: B. $a^{2} - 2ab + b^{2}$
$(a-b)^{2} = a^{2} - 2ab + b^{2}$.
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