Math, asked by lakshmipriyanka1, 1 year ago

What is the value of the [i^19+(1÷i)^25]^2


hukam0685: this answer is wrong,which you had select brainiest

Answers

Answered by drashti5
66
hope this helps.....
if correct...
mark as brainlist plzz
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hukam0685: on squaring -2i,it will become 4i square
Answered by hukam0685
79
we know that
 {i}^{2} = - 1 \\ {i}^{4} =1 \\
so multiple of 4 iota's value is 1.
 {i}^{19} = {i}^{4 + 4 + 4 + 4 + 3} = {i}^{3} = - i
 {( \frac{1}{i} })^{25} = { \frac{1}{ {i}^{6 \times 4 + 1} } }
 = \frac{1}{i} \\
( { - i + \frac{1}{i} })^{2} \\ = {( \frac{ - {i}^{2} + 1}{i} })^{2} = ( { \frac{2}{i} })^{2}
 = \frac{4}{ {i}^{2} } \\ = - 4 \: ans
my answers is correct,please mark it brainiest
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