Question

Question 6(vi)
Using identities, evaluate:
$297\times 303$

Answer 1

$297\times 303=[300-3]\times [300+3]=(300{)}^2-(3{)}^2$
$\left[Usingidentity\right(a-b\left)\right(a+b)=a^2-b^2]$
$=90000-9=89991$