Question

Ajutoorrr, va rog mult!!!!

Answer 1

Răspuns:

Explicație pas cu pas:

$999^{2} = (9*111)^{2} = 9^{2} *111^{2} = 81*111^{2} \\888^{2} = (8*111)^{2} = 8^{2} *111^{2} = 64*111^{2} \\444^{2} = (4*111)^{2} = 4^{2} *111^{2} = 16*111^{2} \\999^{2} -888^{2} -444^{2} = 81*111^{2} -64*111^{2} -16*111^{2} = 111^{2} * (81-64-16)=111^{2}\\ \\\sqrt{x999^{2} -888^{2} -444^{2} } = \sqrt{111^{2}} = 111$