Question

How do you solve `m^2+7=6`?

Answer 1

`m=+-i`

Explanation:

`m^2+7=6` `"Subtract 6 from both sides"`

`m^2+7-6=6-6`, i.e. `m^2+1=0`

So, `m^2+1=0`

`m^2=-1`

`m=+-sqrt(-1)=+-i`

We see clearly that this has roots at `m=+-i`. Do you agree?