Question
Using suitable identities, evaluate the following. $101 \times 103$
✓
Answer
$101 × 103$
$= (100 + 1)(100 + 3)$
$= (100)^2+ (1 + 3)100 + 3 × 1$
$= 10000 + 400 + 3$
$= 10403$
$= (100 + 1)(100 + 3)$
$= (100)^2+ (1 + 3)100 + 3 × 1$
$= 10000 + 400 + 3$
$= 10403$
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