Question

Solve for d.
d^2 = -98
Write your answer in simplified, rationalized form.

Answer 1

`d=7√(2)i`

`d=-7√(2)i`

Explanation:

we are given

`d^2=-98`

Since, we have to solve for d

For finding d , we isolate d on anyone side

so, we can take sqrt both sides

`√(d^2)=√(-98)`

we can use

`i^2=-1`

`√(d^2)=√(98i^2)`

`√(d^2)=√(2* 7* 7i^2)`

So, we get solution as

`d=7√(2)i`

`d=-7√(2)i`