Answer
$x^2-36$
Work Step by Step
$Multiply$ $the$ $algebraic$ $expressions$ $using$ $a$ $Special$ $Product$ $Formula$ $and$ $simplify:$
$(x+6)(x-6)$
Use the Sum and Difference of Same Terms Product Formula: $(A+B)(A-B) = A^2-B^2$
$(x+6)(x-6) = x^2-6^2$
$=x^2-36$