meowymeowylee meowymeowylee

21-03-2018
Mathematics

contestada

write the given expression in terms of i : √-245

a) -245 i

b) -7 i √5

c) i √-245

d) 7 i √5

Respuesta :

AllanMathias AllanMathias

24-03-2018

Okay, so first things first:
i = [tex] \sqrt{-1} [/tex]
That said, no answer that has -245 is correct.

Now we just need to solve [tex] \sqrt{245} [/tex]
245/5=5*49
[tex] \sqrt{5} * \sqrt{49} = 7i*\sqrt{5}[/tex]
So, that's your answer, option D.

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