Question

Which of the following is equivalent to the expression below?

√-98
A. -2i√7
B. 2i√7
c. 7i√2
D. -7i√2

Answer 1

Answer: Choice C)
`7i√(2)`

Work Shown:

`√(-98) = √(-1*49*2)\\\\√(-98) = √(-1)*√(49)*√(2)\\\\√(-98) = i*7*√(2)\\\\√(-98) = 7i√(2)\\\\`