Question

Найдите значение выражения: $sqrt{208 ^{2}-80 ^{2} }$

Answer 1

$sqrt{208^{2}- 80^{2}} = sqrt{43264-6400} = sqrt{36864} =192$

Answer 2

√(208-80)(208+80) =√(128*288) = √(128*288) = √(2*8^2 *2*3^2*4^2) =8*3*4√2*2=192