Posted: 10/17/2010 2:02:32 AM EDT
| I don't need help solving it but rather I need some explaining. x=6 +-sqrt 12/6. I looked at the answer and it was 1+- 1/6 sqrt 12. I'm just curious as to why it wouldn't be x= 1+-sqrt 2? I am having trouble because 12/6=2, and 6/6 =1. Anyway just hoping for some clarification. |
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Quoted: I don't need help solving it but rather I need some explaining. x=6 +-sqrt 12/6. I looked at the answer and it was 1+- 1/6 sqrt 12. I'm just curious as to why it wouldn't be x= 1+-sqrt 2? I am having trouble because 12/6=2, and 6/6 =1. Anyway just hoping for some clarification. Are you saying the problem is x = 6 +- ( sqrt(12)/6) or x = 6 +- (sqrt(12/6))? |
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Quoted:
Quoted:
I don't need help solving it but rather I need some explaining. x=6 +-sqrt 12/6. I looked at the answer and it was 1+- 1/6 sqrt 12. I'm just curious as to why it wouldn't be x= 1+-sqrt 2? I am having trouble because 12/6=2, and 6/6 =1. Anyway just hoping for some clarification. Are you saying the problem is x = 6 +- ( sqrt(12)/6) or x = 6 +- (sqrt(12/6))? The correct answer is x=1 plus or minus 1/6 square root 12. I was wondering why it couldn't be x=1 plus or minus sqrt 2? The actual last step before reducing to the current answer has my problem as 6 plus or minus the square root of 12 over 6. |
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x=(-(-6)±√(62 - (4)(3)(2))/(2)(3) x=(6±√(36 - 24))/(6) x=(6±√12)/6 x=1± (√12)6 or another way to write it x=1± (1/6)(√12) (If i remember HS algebra from 25+ years ago...) The (√12)6 is different than √(12/6). One is .577 the other is 1.414. Dont forget the order of operations. Edit- screw not being able to work ALT keys...√ is the freaking square root sign. |
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Quoted:
Quoted:
A simpler way of expressing "12 / 6" would be "2" Correct, however when it is sqrt of 12 over 6 why does it become 1/6 plus or minus sqrt 12. Rewrite sqrt(12) as 2sqrt(3). ETA Or do this: Quoted:
x=(-(-6)±√(62 - (4)(3)(2))/(2)(3) x=(6±√(36 - 24))/(6) x=(6±√12)/6 x=1± (√12)6 or another way to write it x=1± (1/6)(√12) (If i remember HS algebra from 25+ years ago...) The (√12)6 is different than √(12/6). One is .577 the other is 1.414. Dont forget the order of operations. Edit- screw not being able to work ALT keys...√ is the freaking square root sign. Don't forget order of operations. |