1.

\left. \begin{array} { l } { \text { If } a + b i = \frac { i + i } { 1 - i } \text { then } a ^ { 2 } + b ^ { 2 } = } \\ { 1 \quad b ) - 1 \quad c ) i } & { d ) - i } \end{array} \right.

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