Answer:
[tex]d=7\sqrt{2}i[/tex]
[tex]d=-7\sqrt{2}i[/tex]
Step-by-step explanation:
we are given
[tex]d^2=-98[/tex]
Since, we have to solve for d
For finding d , we isolate d on anyone side
so, we can take sqrt both sides
[tex]\sqrt{d^2}=\sqrt{-98}[/tex]
we can use
[tex]i^2=-1[/tex]
[tex]\sqrt{d^2}=\sqrt{98i^2}[/tex]
[tex]\sqrt{d^2}=\sqrt{2\times 7\times 7i^2}[/tex]
So, we get solution as
[tex]d=7\sqrt{2}i[/tex]
[tex]d=-7\sqrt{2}i[/tex]
