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CarolineJean
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Can someone explain to me, STEP BY STEP how to do this problem please, its Algebra 2Complex numbers. 6(x+5)^2=120
 2 years ago
 2 years ago
CarolineJean Group Title
Can someone explain to me, STEP BY STEP how to do this problem please, its Algebra 2Complex numbers. 6(x+5)^2=120
 2 years ago
 2 years ago

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hartnn Group TitleBest ResponseYou've already chosen the best response.2
first divide both sides by 6 what u get ?
 2 years ago

hartnn Group TitleBest ResponseYou've already chosen the best response.2
and u should know that \(\huge \sqrt{1}=i\)
 2 years ago

matricked Group TitleBest ResponseYou've already chosen the best response.0
6(x+5)^2+120 = (x+5)^2  20i^2 =0 ( and then factorise ) as i^2 =1
 2 years ago

1on1 Group TitleBest ResponseYou've already chosen the best response.0
hartn good explanation and asking for participation . well done !!
 2 years ago

Dido525 Group TitleBest ResponseYou've already chosen the best response.0
dw:1352352097064:dw
 2 years ago

richyw Group TitleBest ResponseYou've already chosen the best response.1
\[6(x+5)^2=120\]\[(x+5)^2=\frac{120}{6}\]\[x+5=\sqrt{\frac{120}{6}}\]\[x+5=\sqrt{20}\]\[x=\sqrt{20}5\]\[x=\sqrt{20}i5\]\[x=\sqrt{4\cdot 5}i5\]x=2\sqrt{5}i5
 2 years ago

Dido525 Group TitleBest ResponseYou've already chosen the best response.0
Now take the square root of the RHS .
 2 years ago

richyw Group TitleBest ResponseYou've already chosen the best response.1
\[x=2\sqrt{5}i5\]
 2 years ago

Dido525 Group TitleBest ResponseYou've already chosen the best response.0
Don't just post the answer...
 2 years ago

hartnn Group TitleBest ResponseYou've already chosen the best response.2
i don't think @CarolineJean wants any of your solutions, she wants to understand and none of you are helping by giving steps out...
 2 years ago

CarolineJean Group TitleBest ResponseYou've already chosen the best response.0
@hartnn yeah, thanks :)
 2 years ago

richyw Group TitleBest ResponseYou've already chosen the best response.1
oops just forgot the \(\pm\)
 2 years ago

Dido525 Group TitleBest ResponseYou've already chosen the best response.0
Now take the square root. What do you get?
 2 years ago

Dido525 Group TitleBest ResponseYou've already chosen the best response.0
I don't think you HAVE to simplify...
 2 years ago

richyw Group TitleBest ResponseYou've already chosen the best response.1
I dunno it's how I learn. sorry. I will leave.
 2 years ago

CarolineJean Group TitleBest ResponseYou've already chosen the best response.0
wow thanks everyone that helped alot :O i have a test tomorrow & didn't know how to do this type of problem but i understand now, thanks ^.^
 2 years ago

1on1 Group TitleBest ResponseYou've already chosen the best response.0
you go hartn !
 2 years ago

Dido525 Group TitleBest ResponseYou've already chosen the best response.0
Ohh you understand? :) Good :) .
 2 years ago

CarolineJean Group TitleBest ResponseYou've already chosen the best response.0
omg the whole time i was trying to figure out how to do it i was trying to figure out how everyone was getting 20... i feel dumb now.... x)
 2 years ago

richyw Group TitleBest ResponseYou've already chosen the best response.1
if you are following my (huge list) of steps. just don't forget to take bot the positive and negative root. So you should get \(x=2i\sqrt{5}5\) and \(x=2i\sqrt{5}5\)
 2 years ago

hartnn Group TitleBest ResponseYou've already chosen the best response.2
x=.... OR x=... either of them is a solution, not both
 2 years ago

CarolineJean Group TitleBest ResponseYou've already chosen the best response.0
yay ! i got that ! @richyw
 2 years ago

CarolineJean Group TitleBest ResponseYou've already chosen the best response.0
thank you to the only 2 ppl that really explained what to do lol @hartnn @richyw
 2 years ago

Dido525 Group TitleBest ResponseYou've already chosen the best response.0
Not me? ;) . Jk Jk . Glad you understood :) .
 2 years ago

CarolineJean Group TitleBest ResponseYou've already chosen the best response.0
sorry didn't see yours ! :O @Dido525
 2 years ago
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