Question

express the following in the form of .a+bi
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Answer 1

$\huge\underline\purple{\sf Answer}$

Express in the form of (a + bi)

$1)( - 5i)(1 \div 8i) \\ \\ = ( - 5 \times 1 \div 8)(i {}^{2} ) \\ \\ = 5 \div 8 \\ \\ = 5 \div 8 + 0i$

$2)( - i)(2i)( - 1 \div 8i {}^{3} ) \\ \\ = ( - 1 \times 2 \times - 1 \div 512)(i) {}^{5} \\ \\ = 1 \div 256 \times i \\ \\ = 0 + i \div 256$

$\huge\underline\pink{\sf Thank you }$