Question

Question 93

Solve the following question:

Using distributive law, find the squares of
a) 101
b) 72

Answer 1

a) We have, ${101}^2=101\times 101$
$=101(100+1)=10100+101=10201$

b) We have, ${72}^2=72\times 72=72\times (70+2)$
$=5040+144=5184$