Using the formula for squaring a binomial, evaluate the following… - Vidyadip

Question

Using the formula for squaring a binomial, evaluate the following:
$ (197)^2$

✓

Answer

$(197)^2$
$= (200 - 3)^2$
$= (200)^2- 2 × 200 × 3 + (3)^2$
$= 40000 - 1200 + 9$
$= 40009 - 1200$
$= 38809$

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