Question

48 номер пожалуйста.....

Answer 1

а) a + b = {-3+1; 2+6} = {-2; 8}. a - b = {-3-1; 2-6} = {-4; -4}
б) |a + b| = √((-2)^2 + 8^2) = √(4 + 64) = √68 = 2√17
|a - b| = √((-4)^2 + (-4)^2) = √(16 + 16) = √32 = 4√2