Solve 5v2+25=115 , where v is a real number

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02-09-2017
Mathematics

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Solve 5v2+25=115 , where v is a real number

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texaschic101 texaschic101 · Answer 1 · 2017-09-02T07:22:59+02:00

texaschic101 texaschic101

02-09-2017

5v^2 + 25 = 115
5v^2 = 115 - 25
5v^2 = 90
v^2 = 90/5
v^2 = 18...take the square root of both sides eliminating the ^2
v = (+-) sqrt 18

v = 4.24 or v = -4.24

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KhaiLi KhaiLi · Answer 2 · 2017-09-02T07:28:38+02:00

KhaiLi KhaiLi

02-09-2017

Can be + or - , as V will be squared. When any -ve number is squared, it will become positive.

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