Question

with formula
first will get brilliant ​

Answer 1

Answer:

$i)(51) {}^{2}$

$= ( 50 + 1) {}^{2}$

$= ( 50) {}^{2} + (1) {}^{2}$

$= 2500 + 1$

$= 2501$

Next,

$(97) {}^{2}$

$= (100 - 3) {}^{2}$

$= (100) {}^{2} - (3) {}^{2}$

$= 10000 - 9$

$= 9991$