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Which expression is equivalent to square root of -80

Which expression is equivalent to square root of -80-example-1
User Dpstart
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2 Answers

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i4 squareroot 5 is the answer
User Divillysausages
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hello :
in : C let : √(-80)= z
z² = - 80 .... (1)
but : i² = -1 and : √(80) = 4√5
(1) equivalent : z² = (
4√5 i )²
conclusion : z = 4√5 i or z = - 4√5 i
User Sardorbek Ruzmatov
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