Question

Evaluate the following (using identities):

$(11{)}^3$

Answer 1

$(11{)}^3$
$=(10+1{)}^3$
$=(10{)}^3+3(10{)}^2\times 1+3\left(10\right)\times 1^2+1^3$ ...[Using $(a+b{)}^3=a^3+3a^{2}b+3a{b}^2+b^3$]
$=1000+300+30+1$
$=1331$