Question

express as a+ib
1-
${2i}^{2}$
​

Answer 1

Answer:

$\huge\bigstar\huge\tt\underline\red{ᴀɴsᴡᴇʀ }\bigstar$

Here is your answer

QUESTION:-

$1 - 2 {i}^{2}$

we know that :

${i}^{2} = - 1 \: and \: {i}^{4} = 1$

so here :-

$1 - 2 {i}^{2} = 1 - 2( - 1) = 1 + 2 = 3$

Hope it helps you..!!!

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Thankyou:)