Question

$\sqrt148^2-21^2 \\104^2-23^@$

Answer 1

Ответ:

$1) \: \sqrt{148} {}^{2} - 21 {}^{2} = 148 - 441 = - 293 \\ 2) \: 104 {}^{2} - 23 {}^{2} = (104 - 23)(104 + 23) = 81 \times 127 = 10287$