I'm back Alright, the answer should be -126 and 124. I am able to get 124 but not -126. Here is what I'm doing: I'm only getting one answer. Where is the -126 coming from?
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Is there a plus/minus from a root you are not taking?
You should be a little more careful with your steps there. You have two mistakes which cancel each other out (line 2 to 3, and then line 3 to 4). Treat the problem like this: What does that suggest?
Originally Posted by Kieth89 I'm back Alright, the answer should be -126 and 124. I am able to get 124 but not -126. Here is what I'm doing: I'm only getting one answer. Where is the -126 coming from? Your second last line is wrong. It should be since you have taken the square root of both sides.
Oh, I see now. Those get me every single time. I really need to remember the + and - deal whenever I'm solving with even roots.. Thanks for the help
Originally Posted by Kieth89 I don't think so... it's not an even root. *Ahem* What do you think the power 2/3 means? To undo this power and hence get x + 1 you have cubed and then square rooted.
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