Question

( 3 . 2 + 7 . 3)² - ( 16 : 2 - 12: 6)²

Answer 1

Resposta:

$(3*2+7*3)^{2} -(16:2-12:6)^{2} =\\=(6+21)^{2} -(8-2)^{2}= \\=27^{2} -6^{2} =\\=729-36=693$