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first divide both sides by -6
what u get ?

and u should know that \(\huge \sqrt{-1}=i\)

6(x+5)^2+120 =
(x+5)^2 - 20i^2 =0 ( and then factorise ) as i^2 =-1

hartn good explanation and asking for participation . well done !!

|dw:1352352097064:dw|

Now take the square root of the RHS .

\[x=2\sqrt{5}i-5\]

Don't just post the answer...

oops just forgot the \(\pm\)

Now take the square root. What do you get?

I don't think you HAVE to simplify...

I dunno it's how I learn. sorry. I will leave.

you go hartn !

Ohh you understand? :) Good :) .

Haha :) .

x=.... OR x=...
either of them is a solution, not both

Not me? ;) . Jk Jk . Glad you understood :) .