Question

Calcular: B = 2 (1 - i)²– 2 (i – 1)² + (1 + i)(1 - i)​

Answer 1

Explicación paso a paso:

$b = 2(1 - 2i + {i}^{2} ) - 2( {i}^{2} - 2i + 1) + 1 - {i}^{2} \\ b = 2 - 4i + 2 {i}^{2} - 2 {i}^{2} + 4i - 2 + 1 - ( - 1) \\ b = 2 - 4i + 2( - 1) - 2( - 1) + 4i - 2 + 1 + 1 \\ 2 - 4i - 2 + 2 + 4i + 0 \\ b = 2$