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LAC
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what is the square root of -9?
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FloatingNose
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plus or minus 3i
glad to see there are other homeschoolers here.
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oregorn1997
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FloatingNose wrote:plus or minus 3i
glad to see there are other homeschoolers here.

YUUUSSSSSS!!!! educated homeschoolers for the win!!!! xD
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micah211
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Lol I used the calculator and got Invalid Input..... +-3 is the only logical answer.
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oregorn1997
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i is the equivalent of the square root of -1. floatingnose's answer was incorrect, but it is still obvious that he knows something ;)


The correct answer to the square root of -9, is just (positive)3i.
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LegoFan560
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oregorn1997 wrote:The correct answer to the square root of -9, is just (positive)3i.
Nope. positive or negative 3i. A square root of a number is a number that, when multiplied by itself, will produce said number. 3i is a square root of -9 because it produces 9*-1, which equals -9. However, -3i is also a square root.
-3i = -1 * 3 * i
(-1 * 3 * i) * (-1 * 3 * i) = (1 * 9 * -1) = 9 * -1 = -9
Therefore, the square root of -9 is equal to plus or minus 3i

FloatingNose's answer was correct. Micah's answer was incorrect. Oregorn was only partially correct.
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micah211
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So I don't think that is my grade level but I learned something.
SOLVE!!!
(6y + 12)2
(that two is supposed to be a Exponent/power)
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LegoFan560
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Can't solve for the variable unless I have both sides of the equation.

But, factoring out:
(6y + 12) squared =
36y^2 + 144y + 144
@Cheryl: Thanks for a wonderful community. It is a pleasure and honor to be a part of it.

"Well then, carry on chaps."
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"it's not malware guys it's linux ;)"
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oregorn1997
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btw, helpful fact for you Micah: "^" means "to the power of"

So, 5^8 means 5 to the 8th power.


Makes things a lot easier ;)
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micah211
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Ya I do that in math class but I didn't know that actually meant that. well thanks for letting me know. and lego you are right.
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You guys stop talking math. :O
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oneofthebest
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why are you guys so smart?
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micah211
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because we are homeschoolers :mrgreen:
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HankTheCowdog
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micah211 wrote:because we are homeschoolers :mrgreen:
Tis the Truth. :mrgreen: :mrgreen:
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I Still listen to Adventures in Odyssey. My Favorite Character would be Eugene, second favorite either Jason Whittaker or Bernard Walton.
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