Question

Solve by using suitable property $(67-25)\times 92$

Answer 1

$(67-25)\times 92$

$=(67-25)\times (67+25)$

$=(67{)}^2-(25{)}^2$ $\left[\right(a+b\left)\right(a-b)=a^2-b^2]$

$=4489-625$

$=3864$