Question

Match the following identities with their correct answers.

• A. $a^2+b^2+2ab$
• B. $a^2+b^2-2ab$
• C. $(a+b)(a-b)$

Answer 1

$(a+b{)}^2=a^2+b^2+2ab$
$(a-b{)}^2=a^2+b^2-2ab$
$a^2-b^2=(a+b)(a-b)$